Touch sensitive processing apparatus, method and electronic system

ABSTRACT

A touch sensitive processing apparatus includes: a driving circuit for connecting to multiple first electrodes, respectively; a sensing circuit for connecting to multiple second electrodes, respectively; and a processor configured for executing multiple sets of first round mutual capacitive detecting steps. Each set of the first round mutual capacitive detecting step further includes: having the driving circuit sending a driving signal to neighboring N first electrodes, where N is a positive integer larger than 1; and having the sensing circuit simultaneously detecting the driving signal via the second electrodes for generating multiple first round sensing information with respective to the set of first round mutual capacitive detecting step. Each of the first round sensing information corresponds to an intersection of central line of the N first electrodes and the second electrode.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefits of a provisional patent applicationNo. 62/416,876, filed on Nov. 3, 2016 and another provisional patentapplication No. 62/450,272, filed on Jan. 25, 2017.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to the field of mutual capacitivedetecting electronic system, and more particularly, to a multiple roundmutual capacitive detecting touch sensitive processing apparatus andmethod thereof.

2. Description of the Prior Art

Touch screens/panels (thereinafter touch screens) have already been oneof the main input/ output devices of modern consumer electronics.Especially, a screen in big size to have the function of touch sensingis the trend of market currently. For providing the coordinateposition(s) of external conductive object(s) approaching orapproximating a touch screen, a traditional touch sensitive processingapparatus needs to sequentially provide a driving signal to each ofmultiple first electrodes being parallel to a first direction, and toperform sensing by multiple second electrodes being parallel to a seconddirection. When all the electrodes are successively scanned (or sensed)in a round, the touch sensitive processing apparatus just reports thecoordinate position(s) of all approaching or approximating event(s).

However, people's finger and the stylus's size will not become bigger asthe size of the touch screen. For keeping the same resolution ofapproximating event in the touch screen in small size, the touch screenin big size configures a lot of first electrodes to maintain theintervals between/among the electrodes. As far as the touch screen inbig size is concerned, it takes a lot of time to perform sequentialscanning or sensing in a round and thus resulting in the reporting rateof approximating event being too slow. Therefore, a kind of mechanismfor speeding up the reporting rate of approximating event is required tolet user(s) keep the same or even have better experience in using thetouch screen in big size.

SUMMARY OF THE INVENTION

According to one embodiment of the present invention, it provides atouch sensitive processing apparatus configured to connect to a touchscreen and used to detect at least one approaching object approximatingor touching the touch screen. The touch screen includes multiple firstelectrodes being parallel to each other and multiple second electrodesbeing parallel to each other. Each of the first electrodes intersectswith the second electrodes to form multiple intersection areas. Thetouch sensitive processing apparatus includes: a driving circuit,connecting to the first electrodes, respectively; a sensing circuit,connecting to the second electrodes, respectively; and a processor,configured to connect to the driving circuit and the sensing circuit.The processor is used for executing multiple sets of first round mutualcapacitive detecting steps. Wherein each set of the first round mutualcapacitive detecting step further includes: having the driving circuitsending a driving signal to neighboring N first electrodes, where N is apositive integer larger than 1; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple first round sensing information with respectiveto the set of first round mutual capacitive detecting step. Wherein eachof the first round sensing information is corresponding to anintersection of central line of the N first electrodes and the secondelectrode.

According to one embodiment of the present invention, it provides anelectronic system used to detect at least one approaching objectapproximating or touching a touch screen. The electronic system includesthe touch screen and a touch sensitive processing apparatus connectingto the touch screen. The features of the touch screen and the touchsensitive processing apparatus connecting to the touch screen aredescribed as above.

According to one embodiment of the present invention, it provides atouch sensitive processing method adaptive to a touch sensitiveprocessing apparatus configured to connect to a touch screen and used todetect at least one approaching object approximating or touching thetouch screen. The touch screen includes multiple first electrodes beingparallel to each other and multiple second electrodes being parallel toeach other. Each of the first electrodes intersects with the secondelectrodes to form a plurality of intersection areas. The touchsensitive processing method includes executing multiple sets of firstround mutual capacitive detecting steps. Each set of the first roundmutual capacitive detecting step further includes: having a drivingcircuit sending a driving signal to neighboring N first electrodes,where N is a positive integer larger than 1; and having a sensingcircuit simultaneously detecting the driving signal via the secondelectrodes for generating multiple first round sensing information withrespective to the set of first round mutual capacitive detecting step.Wherein each of the first round sensing information is corresponding toan intersection of central line of the N first electrodes and the secondelectrode.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch panel. The touch panelincludes: multiple first electrodes being parallel to a first axis;multiple second electrodes being parallel to a second axis; and multiplethird electrodes being parallel to the second axis. Each of the firstelectrodes is arranged to be spanned on the touch panel and intersectswith the second electrodes or the third electrodes to form multipleintersection areas.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides an electronic system. Theelectronic system includes a touch panel and a touch sensitiveprocessing apparatus connecting to the touch panel. The touch panelincludes: multiple first electrodes being parallel to a first axis;multiple second electrodes being parallel to a second axis; and multiplethird electrodes being parallel to the second axis. Wherein each of thefirst electrodes is arranged to be spanned on the touch panel andintersects with the second electrodes or the third electrodes to formmultiple intersection areas. The second electrodes connect to the touchsensitive processing apparatus via a first side of the touch panel. Thethird electrodes connect to the touch sensitive processing apparatus viaa second side of the touch panel. Wherein the first side is parallel tothe second side.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch screen. The touch screenincludes: multiple first electrodes being parallel to a first axis;multiple second electrodes being parallel to a second axis; and multiplethird electrodes being parallel to the second axis. Wherein each of thefirst electrodes is arranged to be spanned on the touch screen andintersects with the second electrodes or the third electrodes to formmultiple intersection areas.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides an electronic system. Theelectronic system includes a touch screen and a touch sensitiveprocessing apparatus connecting to the touch screen. The touch screenincludes: multiple first electrodes being parallel to a first axis;multiple second electrodes being parallel to a second axis; and multiplethird electrodes being parallel to the second axis. Wherein each of thefirst electrodes is arranged to be spanned on the touch screen andintersects with the second electrodes or the third electrodes to formmultiple intersection areas. The second electrodes connect to the touchsensitive processing apparatus via a first side of the touch screen. Thethird electrodes connect to the touch sensitive processing apparatus viaa second side of the touch screen. Wherein the first side is parallel tothe second side.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingapparatus configured to connect to a touch screen and used to detect atleast one approaching object approximating or touching the touch screen.Wherein the touch screen includes multiple first electrodes beingparallel to a first axis, multiple second electrodes being parallel to asecond axis, and multiple third electrodes being parallel to the secondaxis. Wherein each of the first electrodes is arranged to be spanned onthe touch screen and intersects with the second electrodes or the thirdelectrodes to form multiple intersection areas. The touch sensitiveprocessing apparatus includes: a driving circuit, connecting to thefirst electrodes, respectively; a sensing circuit, connecting to thesecond electrodes and the third electrodes, respectively; and aprocessor, configured to connect to the driving circuit and the sensingcircuit. The processor is configured for iteratively executing thefollowing steps: having the driving circuit simultaneously sending adriving signal to two or more first electrodes, wherein at least one ofthe two or more first electrodes intersects with the second electrodesto form the multiple intersection areas, the other of the two or morefirst electrodes intersects with the third electrodes to form themultiple intersection areas; and having the sensing circuitsimultaneously sensing the driving signal via the second electrodes togenerate a one-dimensional sensing information, having the sensingcircuit simultaneously sensing the driving signal via the thirdelectrodes to generate another one-dimensional sensing information.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingmethod adaptive to a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one approachingobject approximating or touching the touch screen.

Wherein the touch screen includes multiple first electrodes beingparallel to a first axis, multiple second electrodes being parallel to asecond axis, and multiple third electrodes being parallel to the secondaxis. Wherein each of the first electrodes is arranged to be spanned onthe touch screen and intersects with the second electrodes or the thirdelectrodes to form multiple intersection areas. The touch sensitiveprocessing method includes executing iteratively the following steps:having the driving circuit simultaneously sending a driving signal totwo or more first electrodes, wherein at least one of the two or morefirst electrodes intersects with the second electrodes to form themultiple intersection areas, the other of the two or more firstelectrodes intersects with the third electrodes to form the multipleintersection areas; and having a sensing circuit simultaneously sensingthe driving signal via the second electrodes to generate aone-dimensional sensing information, having the sensing circuitsimultaneously sensing the driving signal via the third electrodes togenerate another one-dimensional sensing information.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingapparatus configured to connect to a touch screen and used to detect atleast one approaching object approximating or touching the touch screen.Wherein the touch screen includes multiple first electrodes beingparallel to a first axis, multiple second electrodes being parallel to asecond axis, and multiple third electrodes being parallel to the secondaxis. Wherein each of the first electrodes is arranged to be spanned onthe touch screen and intersects with the second electrodes or the thirdelectrodes to form multiple intersection areas. The touch sensitiveprocessing apparatus includes: a driving circuit, connecting to thefirst electrodes, respectively; a sensing circuit, connecting to thesecond electrodes and the third electrodes, respectively; and aprocessor, configured to connect to the driving circuit and the sensingcircuit. The processor is configured for iteratively executing thefollowing steps: having the driving circuit sending the driving signalto all of the first electrodes; having the sensing circuitsimultaneously sensing the driving signal via the second electrodes togenerate a one-dimensional first half screen sensing information, havingthe sensing circuit simultaneously sensing the driving signal via thethird electrodes to generate a one-dimensional second half screensensing information; determining if any approaching object approximatesor touches at least one of the second electrodes according to theone-dimensional first half screen sensing information; determining ifany approaching object approximates or touches at least one of the thirdelectrodes according to the one-dimensional second half screen sensinginformation; and reporting to a host there is no approaching object whenno approaching object approximating or touching at least one of thesecond electrodes and at least one of the third electrodes isdetermined.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingmethod adaptive to a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one approachingobject approximating or touching the touch screen. Wherein the touchscreen includes multiple first electrodes being parallel to a firstaxis, multiple second electrodes being parallel to a second axis, andmultiple third electrodes being parallel to the second axis. Whereineach of the first electrodes is arranged to be spanned on the touchscreen and intersects with the second electrodes or the third electrodesto form multiple intersection areas. The touch sensitive processingmethod includes: having a driving circuit sending a driving signal toall of the first electrodes; having a sensing circuit simultaneouslysensing the driving signal via the second electrodes to generate aone-dimensional first half screen sensing information, having thesensing circuit simultaneously sensing the driving signal via the thirdelectrodes to generate a one-dimensional second half screen sensinginformation; determining if any approaching object approximates ortouches at least one of the second electrodes according to theone-dimensional first half screen sensing information; determining ifany approaching object approximates or touches at least one of the thirdelectrodes according to the one-dimensional second half screen sensinginformation; and reporting to a host there is no approaching object whenno approaching object approximating or touching at least one of thesecond electrodes and at least one of the third electrodes isdetermined.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingapparatus configured to connect to a touch screen and used to detect atleast one approaching object approximating or touching the touch screen.Wherein the touch screen includes multiple neighboring first electrodesand multiple neighboring second electrodes parallel to a first axis,multiple neighboring third electrodes and multiple of neighboring fourthelectrodes parallel to a second axis. Wherein each of the firstelectrodes intersects with the third electrodes to form multipleintersection areas, each of the second electrodes intersects with thefourth electrodes to form multiple intersection areas. The touchsensitive processing apparatus includes: a driving circuit, connectingto the first electrodes and the second electrodes, respectively; asensing circuit, connecting to the third electrodes and the fourthelectrodes, respectively; and a processor, configured to connect to thedriving circuit and the sensing circuit. The processor is configuredfor: executing multiple sets of first round mutual capacitive detectingsteps, wherein each set of the first round mutual capacitive detectingstep further includes: having the driving circuit sending a drivingsignal to neighboring N first electrodes and neighboring N secondelectrodes, where N is a positive integer larger than 1; having thesensing circuit simultaneously detecting the driving signal via thethird electrodes for generating multiple first round first sensinginformation with respective to the set of first round mutual capacitivedetecting step, wherein each of the first round first sensinginformation is corresponding to an intersection of central line of the Nfirst electrodes and the third electrode; and having the sensing circuitsimultaneously detecting the driving signal via the fourth electrodesfor generating multiple first round second sensing information withrespective to the set of first round mutual capacitive detecting step,wherein each of the first round second sensing information iscorresponding to an intersection of central line of the N secondelectrodes and the fourth electrode.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive processingmethod adaptive to a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one approachingobject approximating or touching the touch screen. Wherein the touchscreen includes multiple neighboring first electrodes and multipleneighboring second electrodes parallel to a first axis, multipleneighboring third electrodes and multiple neighboring fourth electrodesparallel to a second axis. Wherein each of the first electrodesintersects with the third electrodes to form the multiple intersectionareas, each of the second electrodes intersects with the fourthelectrodes to the form multiple intersection areas. The touch sensitiveprocessing method includes: executing multiple sets of first roundmutual capacitive detecting steps, wherein each set of the first roundmutual capacitive detecting step further includes: having a drivingcircuit sending a driving signal to neighboring N first electrodes andneighboring N second electrodes, where N is a positive integer largerthan 1; having a sensing circuit simultaneously detecting the drivingsignal via the third electrodes for generating multiple first roundfirst sensing information with respective to the set of first roundmutual capacitive detecting step, wherein each of the first round firstsensing information is corresponding to an intersection of central lineof the N first electrodes and the third electrode; and having thesensing circuit simultaneously detecting the driving signal via thefourth electrodes for generating multiple first round second sensinginformation with respective to the set of first round mutual capacitivedetecting step, wherein each of the first round second sensinginformation is corresponding to an intersection of central line of the Nsecond electrodes and the fourth electrode.

According to one embodiment of the present invention, for speeding upthe mechanism of the rate of reporting approximating event to letuser(s) keeping the same or even having better experience in using thetouch screen in big size, it provides a touch sensitive electronicsystem. The touch sensitive electronic system includes the touch screendescribed above and a touch sensitive processing apparatus connecting tothe touch screen. The features of the touch screen and the touchsensitive processing apparatus are as those described above.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention can be more fully understood by reading thefollowing detailed description of the preferred embodiments, withreference made to the accompanying drawings, wherein:

FIG. 1 illustrates a diagram of an electronic apparatus 100 according toan embodiment of the present invention;

FIG. 2 illustrates a timing diagram of a two-round driving according toan embodiment of the present invention;

FIG. 3 illustrates a timing diagram of a two-round driving according toan embodiment of the present invention;

FIG. 4 illustrates a timing diagram of a accelerating sensing accordingto an embodiment of the present invention;

FIG. 5 illustrates a timing diagram of a switch between sensing methodsaccording to an embodiment of the present invention;

FIG. 6 illustrates a diagram of an electronic apparatus 600 according toan embodiment of the present invention;

FIG. 7 shows a method for mutual capacitive sensing according to anembodiment of the present invention;

FIGS. 8A-8C show multiple flowcharts for touch sensitive processingmethod 800 according to embodiments of the present invention;

FIG. 9 illustrates a flowchart of a touch sensitive processing methodaccording to an embodiment of the present invention;

FIG. 10 illustrates a flowchart of a touch sensitive processing methodaccording to an embodiment of the present invention; and

FIGS. 11A-11D illustrates flowcharts of a touch sensitive processingmethod according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Some embodiments of the present invention are described in detail below.However, in addition to the descriptions given below, the presentinvention can be applicable to other embodiments, and the scope of thepresent invention is not limited by such, rather by the scope of theclaims. Moreover, for better understanding and clarity of thedescription, some components in the drawings may not necessary be drawnto scale, in which some may be exaggerated relative to others, andirrelevant parts are omitted. Besides, between/among the steps shown inthe flowcharts of the present invention, a/some step(s) irrelative tothe present invention may be inserted. The present invention does notlimit the executing order of the steps except for causal relationship.

Referring to FIG. 1, it shows an electronic device 100 according to anembodiment of the present invention. The electronic device 100 includesa touch screen 120. The touch screen 120 includes multiple sensingelectrodes 121 being parallel to each other and multiple drivingelectrodes 122 being parallel to each other. Multiple intersections areformed by these two kinds of electrodes. The electronic device 100further includes a touch sensitive processing apparatus 130 configuredto connect to each of the sensing electrodes 121 and the drivingelectrodes 122 mentioned above, and used to detect or sense an externalconductive object 110 which approaches or approximates to the touchscreen 120. The electronic device 100 further includes a host 140configured to connect to the touch sensitive processing apparatus 130.

In some embodiments, the host 140 may be one or some processor(s) andmemory/memories which perform an operation system for controlling theelectronic device 100. For example, such as Intel x86 instruction setprocessor performing Microsoft Windows system; Qualcomm ARM instructionset processor performing Google Android system; Apple A9 processorperforming Apple iOS system, and so on.

In some embodiments, the touch sensitive processing apparatus 130includes an embedded processor, for example, such as Intel i960processor, 8051 processor, ARM Cortex M series of processors, ARM7,ARM9, etc. The processor embedded in the touch sensitive processingapparatus 130 may perform related touch sensitive instructions forcontrolling the electrical signals emitting and receiving by each of thefirst (or sensing) electrodes 121 and each of the second (driving)electrodes 122, and then transmits the touch related information gotfrom having been processed to the host 140.

As shown in FIG. 1, the multiple driving electrodes 122 from the top tothe bottom may be the second electrodes 122A-K. The touch sensitiveprocessing apparatus 130 drives in turn the multiple driving electrodes122 to cover the whole touch screen 120. When each of the drivingelectrodes 122 is driven, sensing operations on all the first (sensing)electrodes 121 are performed. The time for the traditional scanning orsensing in FIG. 1 relates to the number of the second electrodes 122.

In some embodiments, the touch sensitive processing apparatus 130 maydivide the driving electrodes 122 into the groups for multi-rounddriving to cover the whole touch screen 120. In some embodiments ofN-round driving, each N driving electrodes being adjacent to each otheris combined to be a set of driving electrode which send the drivingsignal at the same time.

For example, in the embodiment of 2-round driving, a first round and asecond round are separately driven to cover the whole touch screen 120.In the first round, the driving electrodes 122A and 122B are the firstset, the driving electrodes 122C and 122D are the second set, etc. Inthe second round, the driving electrodes 122B and 122C are the firstset, the driving electrodes 122D and 122E are the second set, and so on.

Referring to FIG. 2, it shows a timing for 2-round driving according toan embodiment of the present invention. As the embodiment shown in FIG.1, the touch screen 120 includes the driving electrodes 122A-K arrangedin order. In the first-round driving, the driving signal is firstlyprovided to the driving electrodes 122A and 122B at the same time, nextthe driving signal is provided to the driving electrodes 122C and 122Ball at once, and so on. Until the last driving electrode 122K, the touchsensitive processing apparatus 130 singly provides the driving signal tothe driving electrode 122K since there is no driving electrode to bemade a pair with it. Because of driving single electrode only, the touchsensitive processing apparatus 130 may direct to and adjust waveform,voltage, strength of the driving signal, driving duration, and timing ofdriving. Furthermore, it may also direct to and adjust detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit ofeach sensing electrode 121. These make the sensing strengths of a singledriving electrode with regard to two driving electrodes are equivalent.The touch sensitive processing apparatus 130 may report the host 140after the first-round sensing. Compared to the traditional one, thefirst-round touch sensing may save about half the time.

Next, to the second round, the touch sensitive processing apparatus 130singly provides the driving signal to the driving electrode 122A sincethere is no driving electrode to be made a pair with it. Because ofdriving single electrode only, the touch sensitive processing apparatus130 may direct to and adjust the time, the strength, etc., of thedriving signal. Furthermore, it may also direct to and adjust the timeduration of sensing, the time difference between sensing timing anddriving timing, and/or the gain value of sensing circuit of each sensingelectrode 121. These make the sensing strengths of single drivingelectrode and of two driving electrodes are equivalent. Then, thedriving signal is provided to the driving electrodes 122B and 122Csimultaneously, next the driving signal is provided to the drivingelectrodes 122D and 122E concurrently, and so on, until the last set ofdriving electrodes 122J and 122K. The touch sensitive processingapparatus 130 may report the host 140 after the second-round sensing.Compared to the traditional one, the second-round touch sensing may saveabout half the time.

Because two electrodes 122 are driven simultaneously, the sensed signaluses the central position of the two driving electrodes 122 as a basefor addition. Therefore, to a motionless approximating object, itscoordinate positions calculated from the first-round sensing and thesecond-round sensing are not the same, that is, moving up and down attwo coordinate points. The host 140 may direct to fix this status byaveraging the coordinate positions respectively got from theapproximating event in the first-round and the approximating event inthe second-round. Or the host 140 may average the coordinate positionsgot from the latest two approximating events to get the coordinatecloser to real approximating position.

In the abovementioned embodiment, the host 140 selectively averages theapproximating events got from the latest two rounds. The host 140 doesnot know that the approximating object has a bigger effect in thefirst-round sensing or the second-round sensing, so it seems the effectsof the approximating object in the two rounds' sensing are equivalent.For example, an approximating object is quite close to the drivingelectrode 122D but it is between the driving electrodes 122C and 122D.In the first-round scanning (or sensing) to the driving electrodes 122Cand 122D, a first approximating event and a related first coordinate aregot. In the second-round scanning (or sensing) to the driving electrodes122D and 122E, a second approximating event and a related secondcoordinate are got. Supposedly, the sensing quantity of the firstapproximating event should be bigger than the sensing quantity of thesecond approximating event because the position of the approximatingobject is between the driving electrodes 122C and 122D. Since the touchsensitive processing apparatus 130 report the information to the host140 which only includes the first coordinate and the second coordinatebut does not include the sensing quantities of the first approximatingevent and the second approximating event, the method that the host 140averages the first coordinate and the second coordinate is not preciseyet.

Referring to FIG. 3, it shows a timing for 2-round driving according toan embodiment of the present invention. The difference to the embodimentof FIG. 2 is that the touch sensitive processing apparatus 130 willperform a first-round sensing and a second-round sensing firstly to getthe first-round's approximating event and related coordinate and thesecond-round's approximating event and related coordinate,correspondingly. Next, the touch sensitive processing apparatus 130 willperform weighted operations to the first-round coordinate and thesecond-round coordinate according to the sensing quantity of thefirst-round approximating event and the sensing quantity of thesecond-round approximating event, respectively, to get the more preciseposition.

Therefore, in FIG. 3, the touch sensitive processing apparatus 130reports the coordinate to the host 140 according to the latest tworounds' information except that the touch sensitive processing apparatus130 does not report to the host 140 at the first-round sensing. Thereporting rate is double to the traditional one except that the firstreporting rate is about equal to the traditional one.

In the embodiments shown in FIG. 2 and FIG. 3, the sets of the drivingelectrodes 122 are sequentially driven from the top to the bottom.However, this sequential driving method may cause a fixed frequency EMIwith other parts inside the electronic apparatus 100 or other electronicapparatuses around the electronic apparatus 100. Therefore, in anotherembodiment, the sets of the driving electrodes 122 are driven in randomin order to reduce EMIs in some certain frequencies.

Although the reporting rates of FIGS. 2 and 3 is double to thetraditional one, there are other sensing modes' reporting rate may behigher than double traditional one. Referring to FIG. 4, it shows anaccelerating sensing according to an embodiment of the presentinvention. In FIG. 4, a whole screen driving is performed firstly, thatis, the driving signal is simultaneously provided to the drivingelectrodes 122A-K. The touch sensitive processing apparatus 130 maydetermine whether an approximating object exists according to thesensing results from all sensing electrodes 121. If not, the touchsensitive processing apparatus 130 may report no approximating object tothe host 140. In other words, when there is no any approximating object,using the whole screen driving would have the fastest reporting rate.

As shown in FIG. 4, when the touch sensitive processing apparatus 130determines the approximating object exists, it may sequentially providethe driving signal to the driving electrodes 122A-K. When the touchsensitive processing apparatus 130 determines approximating objects nearthe driving electrodes 122B and 122H, it may report to the host 140.Then, several times of accelerating sensings may be performed, that is,only providing the driving signal to the driving electrodes 122B and122H to perform sensing, and reporting to the host 140.

It can be imaged that if the quantity of approximating object(s) issmaller, the time spent by the accelerating sensing is less. Thereporting rate is reporting number divided by the total time of onewhole screening sensing and several times of accelerating sensing. Whenthe reporting rate is higher than double traditional one, this sensingmay be adapted. However, when the quantity of approximating objects isbigger, making the reporting rate less than half the traditional one,the sensing ways of FIGS. 2 and 3 may be switched to.

Referring to FIG. 5, it shows a switching of sensing way according to anembodiment of the present invention. FIG. 5 is the same as FIG. 4 at thebeginning, performing the whole screen driving firstly, that is,providing the driving signal to the driving electrodes 122A-Ksimultaneously. The touch sensitive processing apparatus 130 maydetermine whether an approximating object exists according to thesensing results from all sensing electrodes 121. When the touchsensitive processing apparatus 130 determines the approximating objectexists, it may sequentially provide the driving signal to the drivingelectrodes 122A-K. When the quantity of approximating objects is biggerand making the reporting rate less than half the traditional one, thetouch sensitive processing apparatus 130, for example, may switches tothe sensing ways of FIGS. 2 and 3 after reporting to the host 140. Asshown in FIG. 5, the touch sensitive processing apparatus 130 switchesto the sensing way of FIG. 2.

Conversely, when the embodiments of FIGS. 2 and 3 are implemented, andif the touch sensitive processing apparatus 130 determines the quantityof the approximating objects is smaller, and the reporting rate by usingthe embodiment shown in FIG. 4 (a whole screen and sequential drivingand several times of accelerating sensing) is faster, the sensing wayshown in FIG. 2 or FIG. 3 may switch to the sensing way shown in FIG. 4.

In a variation of the embodiment in FIG. 5, when a whole screen drivingand detecting is performing and an approaching object is determined bythe touch sensitive processing apparatus 130 according to the sensingresults of all sensing electrodes 121, the sequential driving anddetecting shown in the embodiment of FIG. 5 may be omitted and amultiple round detecting is performed directly. By doing so, because ofomitting the time of sequential driving and detecting, the firstreporting time will faster than that of the embodiment in FIG. 5.

To sum up, the present application provides several sensing ways havingfaster reporting rate than the traditional one. Moreover, according tothe quantity of the approximating object(s), the present application mayprovide the determining conditions for switching the sensing ways. Thepresent application may let the host 140 receive more approximatingevent reports in one unit of time to make user(s) have better touchsensitive experience, especially in using the touch sensitive screen inbig size.

Referring to FIG. 6, it shows an electronic system 600 according to anembodiment of the present invention. The electronic system 600 includesa touch panel or screen 620 (thereinafter touch screen). The touchscreen 620 includes multiple driving electrodes 122 being parallel toeach other, multiple upper half sensing electrodes 650 being parallel toeach other, and multiple lower half sensing electrodes 660 beingparallel to each other. Multiple intersections are formed on the upperhalf of the touch screen 620 by the multiple driving electrodes 122 andmultiple upper half sensing electrodes 650. Multiple intersections areformed on the lower half of the touch screen 620 by the multiple drivingelectrodes 122 and multiple lower half sensing electrodes 660. Theelectronic device 600 further includes a touch sensitive processingapparatus 630 configured to connect to each of the upper half sensingelectrodes 650, the lower half sensing electrodes 660, and the drivingelectrodes 122 mentioned above, and used to detect or sense an externalconductive object 110 which approaches or approximates to the touchscreen 620. The upper half sensing electrodes 650 connect to the touchsensitive processing apparatus 630 from the upper half side of the touchscreen 620. The lower half sensing electrodes 660 connect to the touchsensitive processing apparatus 630 from the lower half side of the touchscreen 620. The electronic device 600 further includes a host 140configured to connect to the touch sensitive processing apparatus 630.

In some embodiments, the touch sensitive processing apparatus 230includes an embedded processor, for example, such as Intel i960processor, 8051 processor, ARM Cortex M series of processors, ARM7,ARM9, etc. The processor embedded in the touch sensitive processingapparatus 230 may perform related touch sensitive instructions forcontrolling the electrical signals emitting and receiving by each of theelectrodes 122, 650, and 660, and then transmits the touch relatedinformation got from having been processed to the host 140.

As shown in the embodiment of FIG. 6, since the number of the drivingelectrodes 122 is eleven in an odd number, the touch screen 620 maydivided into the upper and lower halves from the interval between thesixth and the seventh driving electrodes 122. The upper half compared tothe lower half has one more driving electrode. When the number of thedriving electrodes 122 is an even number, the upper and lower halves ofthe touch screen 620 may have the same number of the driving electrodes122.

Moreover, as shown in the embodiment of FIG. 6, the number and thepositions of the upper half sensing electrodes 650 and the lower halfsensing electrodes 660 are corresponded. Each of the upper half sensingelectrodes 650 correspond to one of the lower half sensing electrodes660 so that the position of the external conductive object 110 can becalculated by the touch sensitive processing apparatus 630.

Referring to FIG. 7, it shows mutual-capacitance sensing ways accordingto the embodiments of the present invention. On the left side of FIG. 7,a traditional sensing way 710 for the traditional touch sensitiveprocessing apparatus 130 to the touch screen 120 is illustrated and isadaptive to the embodiment of FIG. 1. The traditional touch sensitiveprocessing apparatus 130 transmits in turn the driving signal to thedriving electrodes 122A-K and performs sensing by the sensing electrodes121. After each of the driving electrodes 122 is driven, the traditionaltouch sensitive processing apparatus 130 sends one approximating evenreport to the host 140.

FIG. 7 also shows three accelerating sensing ways 720, 730, and 740adaptive to the embodiment of FIG. 6. At the beginning of theaccelerating sensing ways 720, the touch sensitive processing apparatus630 simultaneously provides the driving signal to two driving electrodes122A and 122G respectively belonging to the upper and the lower halves,that is, the top driving electrodes 122 in the upper and the lowerhalves, respectively. At the same time, the touch sensitive processingapparatus 630 also respectively receives the driving signals sensed bythe upper half sensing electrodes 650 and the lower half sensingelectrodes 660. Next, the touch sensitive processing apparatus 630sequentially performs the abovementioned steps to provide the drivingsignal to two driving electrodes respectively belonging to the upper andthe lower halves. In the last round, the driving electrodes belonging tothe lower half are driven completely, thus only the driving electrode122F in the upper half needs to be driven and only the driving signalsensed by the sensing electrode 650 in the upper half needs to bereceived. After this step, the touch sensitive processing apparatus 630sends one approximating event report to the host 140.

Obviously, the accelerating sensing way 720 is faster than thetraditional sensing way 710 about double in time, that is, for example,the reporting rate of approximating event is faster about twice. Thecost is to provide double sensing circuits to simultaneouslyrespectively connect to the multiple upper half sensing electrodes 650being parallel to each other and the multiple lower half sensingelectrodes 660 being parallel to each other.

Similarly, the difference between the accelerating sensing ways 730 and720 is that the driving direction for the touch sensitive processingapparatus 630 in the lower half is from the bottom to the top. This isalso different to the driving direction in the upper half being from thetop to the bottom. Also, the accelerating sensing way 730 is faster thanthe traditional sensing way 710 about double in time, that is, forexample, the reporting rate of approximating event is faster abouttwice.

The accelerating sensing ways 740 is alike those shown in FIG. 2 andFIG. 3, that is, grouping the upper and lower halves of drivingelectrodes 122. As shown in FIG. 7, the six driving electrodes 122A-F inupper half are divided into three groups, the driving electrodes 122G-Kin lower half are also divided into three groups, but the drivingelectrode 122K is the only one in its group. The accelerating sensingways 740 may be the same as those shown in FIG. 2, performing two-roundsensing ways, respectively. In the first round sensing of upper half ofthe touch screen, the six driving electrodes 122A-F are driven by groupin turn. At the same time, in the first round sensing of lower half ofthe touch screen, the five driving electrodes 122G-K are driven by groupin turn, that is, driving a set of driving electrodes 122G-H firstly,then driving another set of driving electrodes 122I-J, and finallydriving the single driving electrode 122K. After the first round sensingis finished, reporting the approaching object detected by the upper halfand the lower half of the touch screen may be respectively performed. Inthe second round of the upper half touch screen, since the drivingelectrodes of the upper half touch screen are even, the same order fordriving the six driving electrodes 122A-F by group in turn can beadapted. But in the second round of the lower half touch screen, sincethe driving electrodes of the lower half touch screen are odd, thesingle driving electrode 122G may be driven firstly, next a set ofdriving electrode, and finally another set of the driving electrodes122J-K. After the second round sensing is finished, reporting theapproaching object detected by the upper half and the lower half of thetouch screen may be respectively performed.

The accelerating sensing ways 740 maybe also the same as the methodshown in FIG. 2. After performing first two rounds of sensing, thecoordinate according to this two rounds' sensing information is justreported to the host 140. Except for the rate of the first reportingbeing equal to the rate of traditional reporting, the follow-up rates ofreporting are two times of the rate of traditional reporting.

Similarly, the upper half and the lower half touch screen in FIG. 6 canbe respectively seemed to independent touch screens adaptive to theimplementations of FIG. 4 and FIG. 5. That is, half screen driving anddetecting is performed to the upper half and the lower half touch screenrespectively. When an approaching object is detected by the half touchscreen, the sequence driving and detecting is just performed on the halftouch screen and next the accelerating sensing is performed. Or, thehalf screen driving and detecting is firstly performed to the upper halfand the lower half touch screen respectively. When an approaching objectis detected by the half touch screen, the multiple round sensing is justperformed on the half touch screen.

The present invention may have other driving ways. For example, thetouch sensitive processing apparatus 630 may singly provide the drivingsignal to the driving electrode 122F firstly. Next, the touch sensitiveprocessing apparatus 630 provides the driving signal to each of thedriving electrodes 122 from the bottom to the top in the upper half andfrom the top to the bottom in the lower half.

In some embodiments, to protect the electronic device 600 from regularelectromagnetic interference (EMI) resulting from sequential drivingdirection, the touch sensitive processing apparatus 630 may even use arandom way to finish the driving and sensing in the upper and the lowerhalves. The sensing way in each round may use a random way, e.g., thesame random way may be used in the upper and the lower halves, or thedifferent random way may be used in the upper and the lower halves. Evena certain half uses a random way to perform sensing and the other uses asequential way to perform sensing. The object is to avoid the regularEMI generated by the touch screen 620, to lower the EMI effect to otherequipment in the electronic device 600, such as the wirelesscommunication interface or screen, or to reduce the EMI to otherequipment beside the electronic device 600.

In the embodiment of FIG. 6, the driving electrodes 122 are parallel tothe direction of the horizontal axis which the touch screen 620refreshes pixels, and thus the touch screen 620 is divided into twoparts in the upper and the lower halves. In some embodiments, the touchscreen 620 may be divided into two parts in the left and the righthalves. The driving electrodes 122 are vertical to the direction of thehorizontal axis which the touch screen 620 refreshes pixels. Multipleleft half sensing electrodes being parallel to each other connect to thetouch sensitive processing apparatus 630 from the left side of the touchscreen 620. Multiple right half sensing electrodes being parallel toeach other connect to the touch sensitive processing apparatus 630 fromthe right side of the touch screen 620. Except for the direction beingchanged, the sensing ways of the touch sensitive processing apparatus630 may use the sensing ways according to the accelerating sensing ways720 and 730 shown in FIG. 7, and the variations of variousabovementioned sensing ways.

One of the advantages in using the upper and the lower halves shown inFIG. 6 is that the driving electrodes 122 are parallel to the directionof pixel horizontal axis. When a certain driving electrode sends thedriving signal and the pixel horizontal axis near the certain drivingelectrode just performs refreshing, the driving signals sensed by allthe upper half sensing electrodes 650 or all the lower half sensingelectrodes 660 and the pixel refreshing current are almost consistent.

Besides, in some in-cell type of touch sensitive liquid crystal display(LCD) 620, the driving electrodes 122 may be used together with thecommon electrodes of the LCD. The advantage of this part may refer toUSPA No. 2014/0071360.

Referring to FIGS. 8A-8C, multiple flowcharts for touch sensitiveprocessing method 800 according to embodiments of the present inventionare illustrated. The touch sensitive processing method 800 may beadaptive to the touch sensitive processing apparatus 130 shown in FIG.1, and can also be used to further explain the embodiments of FIGS. 2-5.The touch sensitive processing apparatus may include: a driving circuit,connecting to multiple first electrodes; a sensing circuit, connectingto multiple second electrodes; and a processor, connecting to thedriving circuit and the sensing circuit. The driving circuit may includefrequency signal generator, frequency adjustment circuit,voltage-voltage converter, signal amplifier, and so on. The sensingcircuit may include frequency signal generator, frequency adjustmentcircuit, integral circuit, analog to digital converter, variableresistor, signal amplifier, and so forth. A person with ordinary skillin the art can appreciate the common implementations of the drivingcircuit and the sensing circuit. There have been billions of consumerelectronics having touch screen and touch panel, and the touch sensitiveprocessing apparatuses thereof all have the abovementioned drivingcircuit and sensing circuit. The following refers to FIG. 8A.

In optional step 810: whole screen driving and detecting, as those shownin the far left of FIG. 4 and FIG. 5. The whole or full screen drivingand detecting further includes: having the driving circuitsimultaneously sending the driving signal to all the first electrodes;having the sensing circuit simultaneously detecting the driving signalvia the second electrodes for generating one-dimensional sensinginformation with respective to and formed by multiple sensinginformation; and determining if at least one approaching objectapproximates the touch screen according to the one-dimensional sensinginformation.

In optional step 815: determining if at least one approaching ortouching object approximates the touch screen according to the detectingresult of step 810. When the approaching object is determined, the flowcan be continued to optional step 820 or to step 840. When there is noapproaching or touching object, step 810 can be performed again later.

In optional step 820: executing a sequential drivings and detecting stepas those shown in FIG. 4 and FIG. 5. The sequential or individualdrivings and detectings step further includes: having the drivingcircuit sending in turn the driving signal to all the first electrodesin a time division manner; having the sensing circuit simultaneouslydetecting the driving signal via the second electrodes when each of thefirst electrodes sends the driving signal for generating two-dimensionalsensing information with respective to and formed by multiple sensinginformation; and determining a number of and a position of objectapproaching or touching the touch screen according to thetwo-dimensional sensing information. Next, the flow continues to step870 or to optional step 825.

In optional step 825: determining if a number of approaching or touchingobject is bigger than a threshold according to the detecting result ofthe sequential drivings and detectings step. When the number ofapproaching or touching object is not larger than the threshold, step830 may be performed, otherwise step 840 is performed.

In optional step 830: performing accelerating detecting corresponding tothe object as those shown in FIG. 4. After getting the result of theaccelerating detecting, step 870 is performed.

In step 840: first round mutual capacitive detecting. As mentionedbefore, the value of N can be set, and all of the first electrodes aredivided into groups by N. Mutual capacitive detecting is performed bygroup until all sets are detected. The flow continues to step 860. Eachset of the first round mutual capacitive detecting step furtherincludes: step 850, having the driving circuit sending a driving signalto neighboring N first electrodes, where N is a positive integer largerthan 1; and step 855, having the sensing circuit simultaneouslydetecting the driving signal via the second electrodes for generatingmultiple first round sensing information with respective to the set offirst round mutual capacitive detecting step, wherein each of the firstround sensing information is corresponding to an intersection of centralline of the N first electrodes and the second electrode

In step 860: calculating at least one position of the at least oneapproaching or touching object on the touch screen according to themultiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps. Next, step 870 isperformed.

In step 870: reporting the at least one position getting from step 860to a host.

The following refers to FIG. 8B, the steps 810-840 in FIG. 8B are thesame as those shown in FIG. 8A, and they will not be described again.The embodiment of FIG. 8A is adaptive to that the number of the firstelectrode is even. The embodiments of FIG. 8B and FIG. 8C are adaptiveto that the number of the first electrode is odd.

In step 852: at least one first round special mutual capacitivedetecting step, including: having the driving circuit sending thedriving signal to neighboring M₁ first electrodes, where M₁ is apositive integer smaller than N, the neighboring M₁ first electrodes donot include the first electrodes having been sent the driving signal inthe multiple sets of first round mutual capacitive detecting steps;having the sensing circuit simultaneously detecting the driving signalvia the second electrodes for generating multiple first round specialsensing information with respective to the set of first round specialmutual capacitive detecting step, wherein each of the first roundspecial sensing information is corresponding to an intersection ofcentral line of the M₁ first electrodes and the second electrode,wherein the processor directs to and adjusts one of or any combinationof parameters to make detecting strengths of the second electrode withrespective to the M₁ first electrodes and the N first electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit. Theflow may continue to optional step 854 or to step 862.

In optional step 854: executing another first round special mutualcapacitive detecting step, including: having the driving circuit sendingthe driving signal to neighboring M₂ first electrodes, where M₂ is apositive integer smaller than N and is not equal to M₁, the neighboringM₂ first electrodes do not include the first electrodes and the M₁ firstelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps; having the sensingcircuit simultaneously detecting the driving signal via the secondelectrodes for generating multiple first round special sensinginformation with respective to the set of first round special mutualcapacitive detecting step, wherein each of the first round specialsensing information is corresponding to an intersection of central lineof the M₂ first electrodes and the second electrode, wherein theprocessor directs to and adjusts one of or any combination of parametersto make detecting strengths of the second electrode with respective tothe M₂ first electrodes and the N first electrodes are equivalent,wherein the parameters includes: waveform, voltage, strength of thedriving signal, driving duration, timing of driving, detecting duration,timing of detecting, time difference between the sensing timing anddriving timing, resistance value of variable resistor of the sensingcircuit, and gain value of amplifier of the sensing circuit. Next, step862 is performed. The present invention dose not limited to theexecuting order of steps 840, 852, and 854.

In step 862: calculating at least one first round position of the atleast one approaching object on the touch screen according to themultiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps and the multiplefirst round special sensing information generated from all of the firstround special mutual capacitive detecting steps. Next, step 870 isperformed.

Referring to FIG. 8C, the steps 810-840 and 870 in FIG. 8C are the sameas those shown in FIG. 8A, and they will not be described again. Themain difference between FIG. 8C and FIG. 8B is that it only performs oneround detecting and then reports the position to the host in FIG. 8B. InFIG. 8C, it performs multiple round detecting and then reports theposition to the host. Therefore, the error of position can be reduced,and the rate of reporting after N-th round is equal to the rate ofreporting in FIG. 8B. The value of p is set to an initial value to 1before performing step 841.

In step 841: performing p-th round mutual capacitive detecting, where pis a positive integer from 1 to N. Step 841 is basically the same asstep 840. Next, step 853 is performed.

In step 853: performing first p-th special mutual capacitive detecting,the step is basically the same as step 852. Next, optional step 855 isperformed or step 857 is subsequently performed.

In step 855: performing another p-th special mutual capacitivedetecting, the step is basically the same as step 854. Next, step 857 isperformed.

In step 857: adding one to the value of p, determining if N rounddetecting is finished. If not, returning to perform step 841. If yes,performing step 864.

In step 864: calculating at least one N-th round position of the atleast one approaching object on the touch screen according to themultiple N-th round sensing information and the multiple N-th roundspecial sensing information, averaging N N-th round positions to get anaverage position. Next, performing step 870, reporting the averageposition to a host.

Referring to FIG. 9, a flowchart of a touch sensitive processing methodaccording to one embodiment of the present invention is illustrated. Thetouch sensitive processing method 900 may be adapted to the touchsensitive processing apparatus 630 shown in FIG. 6 and be used to detectif any approaching object approximates the touch screen 620. The touchscreen includes multiple first electrodes 122A-K being parallel to afirst axis, multiple second electrodes 650 being parallel to a secondaxis, and multiple third electrodes 660 being parallel to the secondaxis, wherein each of the first electrodes 122 is arranged to be spannedon the touch screen 620 and intersects with the second electrodes 650 orthe third electrodes 660 to form multiple intersection areas. The touchsensitive processing apparatus includes: a driving circuit, connectingto the first electrodes, respectively; a sensing circuit, connecting tothe second electrodes and the third electrodes, respectively; and aprocessor, configured to connect to the driving circuit and the sensingcircuit. The processor may seem to a procedure module configured forexecuting the following steps:

In step 910: sending the driving signal to all of the first electrodes,for example, having the driving circuit sending the driving signal toall of the first electrodes 122A-K. Next steps 920 and 925 are performedat the same time.

In step 920: sensing the driving signal via the second electrodessimultaneously to generate one-dimensional first half screen sensinginformation, for example, having the sensing circuit simultaneouslysensing the driving signal via the second electrodes 650. Next, step 930is performed.

In step 925: sensing the driving signal via the third electrodessimultaneously to generate one-dimensional second half screen sensinginformation, for example, having the sensing circuit simultaneouslysensing the driving signal via the third electrodes 660. Next, step 935is performed.

In step 930: determining if at least one object approaching or touchingat least one of the second electrodes according to the one-dimensionalfirst half screen sensing information. The one-dimensional first halfscreen sensing information will change when the object approaching ortouching at least one of the second electrodes 650. Next, step 940 isperformed.

In step 935: determining if at least one object approaching or touchingat least one of the third electrodes according to the one-dimensionalsecond half screen sensing information. The one-dimensional second halfscreen sensing information will change when the object approaching ortouching at least one of the third electrodes 660. Next, step 940 isperformed.

In step 940: determining whether there is object approaching or touchingthe at least one of the second electrodes or at least one of the thirdelectrodes. Step 950 is performed when there is no approaching object.Step 960 is performed when there is object approaching or touching atleast one of the second electrodes. Step 965 is performed when there isobject approaching or touching at least one of the third electrodes.Steps 960 and 965 may be performed at the same time when the objectconcurrently approaching at least one of the second electrodes and atleast one of the third electrodes. The steps 960 and 965 could be theaccelerating sensing ways 720, 730, and 740 shown in the FIG. 7. Step960 may be performed soly when the object only approaching or touchingat least one of the second electrodes. Step 965 may be performed solelywhen the object only approaching or touching at least one of the thirdelectrodes.

In step 950: reporting to a host there is no approaching or touchingobject. Next, waiting for a while and returning to step 910.

In step 960: performing accelerating detecting on the second electrodes,for example, following the accelerating detecting ways 720, 730 or 740of FIG. 7, performing individual detecting or N round detecting in orderor in random to detect the first electrodes 122A-F. Next, step 970 isperformed.

In step 965: performing accelerating detecting on the third electrodes,for example, following the accelerating detecting ways 720, 730 or 740of FIG. 7, performing individual detecting or N round detecting in orderor in random to detect the first electrodes 122G-K. Next, step 970 isperformed.

In step 970: reporting the approaching or touching object to the hostaccording to the detecting result of step 960 and/ or step 965. Whenthis is done, it waits a while and returns to step 910, or repeats step960 and/or 965 several times and then returns to step 910.

Referring to FIG. 10, a flowchart of a touch sensitive processing methodaccording to one embodiment of the present invention is illustrated. Thetouch sensitive processing method 1000 may be adapted to the touchsensitive processing apparatus 630 shown in FIG. 6 and be used to detectif any object approaching or touching the touch screen 620. The touchscreen 620 includes multiple first electrodes 122A-K being parallel to afirst axis, multiple second electrodes 650 being parallel to a secondaxis, and multiple third electrodes 660 being parallel to the secondaxis, wherein each of the first electrodes 122 is arranged to be spannedon the touch screen 620 and intersects with the second electrodes 650 orthe third electrodes 660 to form multiple intersection areas. The touchsensitive processing apparatus includes: a driving circuit, connectingto the first electrodes 122, respectively; a sensing circuit, connectingto the second electrodes 650 and the third electrodes 660, respectively;and a processor, configured to connect to the driving circuit and thesensing circuit. The processor may seem to a procedure module configuredfor executing the following steps:

In step 1010: having the driving circuit simultaneously sending adriving signal to two or more first electrodes 122, wherein at least oneof the two or more first electrodes 122 intersects with the secondelectrodes 660 to form the multiple intersection areas, the other of thetwo or more first electrodes 122 intersects with the third electrodes650 to form the multiple intersection areas. When step 1010 isperformed, steps 1020 and 1025 are performed at the same time.

In step 1020: sensing the driving signal via the second electrodes atthe same time to generate one-dimensional sensing information. Next,step 1030 is performed.

In step 1025: sensing the driving signal via the third electrodes at thesame time to generate another one-dimensional sensing information. Next,step 1030 is performed.

In step 1030: determining if all of the first electrodes intersectingwith the second electrodes have been sent the driving signal? If anyfirst electrode intersecting with the second electrodes has not beensent the driving signal, the flow returns to step 1010, otherwiseperforming step 1040. In other words, when the number of the firstelectrodes intersecting with the second electrodes is smaller the thatof the third electrodes intersecting with the first electrodes,determining that if the first electrodes intersecting with the secondelectrodes have sent the driving signal is performed. When the firstelectrodes intersecting with the second electrodes have already sent thedriving signal, individual detecting step to the first electrodesintersecting with the third electrodes is singly performed.

In step 1040: having the driving circuit sending the driving signal toone of the first electrodes having been not sent the driving signal. Atthe same time, step 1050 is performed.

In step 1050: simultaneously sensing the driving signal via the thirdelectrodes to generate another one-dimensional sensing information.Next, step 1060 is performed.

In step 1060: determining if all of the first electrodes have sent thedriving signal. In other words, when the number of the second electrodesintersecting with the first electrodes is smaller the that of the thirdelectrodes intersecting with the first electrodes, determining that ifthe first electrodes intersecting with the third electrodes have sentthe driving signal is performed. If yes, the flow continues to step1070, otherwise returns to step 1040.

In step 1070: piecing up all of the one-dimensional sensing informationwith respective to the order of the first electrodes to atwo-dimensional sensing information. In other words, piecing up all ofthe one-dimensional sensing information generated from steps 1020, 1025,and 1050 with respective to the order of the first electrodes to thetwo-dimensional sensing information. Next, step 1080 is performed.

In step 1080: detecting at least one object approaching or touching thetouch screen according to the two-dimensional sensing information.

Referring to FIG. 11A, a flowchart of a touch sensitive processingmethod according to one embodiment of the present invention isillustrated. The touch sensitive processing method 1100 may be adaptedto the touch sensitive processing apparatus 630 shown in FIG. 6 and beused to detect any object approaching or touching the touch screen 620.

The touch screen 620 includes multiple neighboring first electrodes122A-F and multiple neighboring second electrodes 122G-K parallel to afirst axis, multiple neighboring third electrodes 650 and multipleneighboring fourth electrodes 660 parallel to a second axis, whereineach of the first electrodes 122A-F intersects with the third electrodes650 to form multiple intersection areas, each of the second electrodes122G-K intersects with the fourth electrodes 660 to form multipleintersection areas. The touch sensitive processing apparatus includes: adriving circuit, connecting to the first electrodes 122A-F and thesecond electrodes 122G-K, respectively; a sensing circuit, connecting tothe third electrodes 650 and the fourth electrodes 660, respectively;and a processor, configured to connect to the driving circuit and thesensing circuit. The processor is configured for executing the followingsteps:

In step 1110: p-th round mutual capacitive detecting step used forperforming mutual capacitive driving and detecting to groups of firstelectrodes and second electrodes, where p is a positive integer. Whenfirst round is performed, step 1110 is a first round mutual capacitivedetecting step, it may further include the following steps.

In step 1112: having the driving circuit simultaneously sending adriving signal to neighboring N first electrodes and neighboring Nsecond electrodes, where N is a positive integer larger than 1. At thesame time, steps 1114 and 1116 are performed.

In step 1114: having the sensing circuit simultaneously detecting thedriving signal via the third electrodes for generating multiple firstround first sensing information with respective to the set of firstround mutual capacitive detecting step, wherein each of the first roundfirst sensing information is corresponding to an intersection of centralline of the N first electrodes and the third electrode.

In step 1116: having the sensing circuit simultaneously detecting thedriving signal via the fourth electrodes for generating multiple firstround second sensing information with respective to the set of firstround mutual capacitive detecting step, wherein each of the first roundsecond sensing information is corresponding to an intersection ofcentral line of the N second electrodes and the fourth electrode.

In step 1118: when a set of first electrodes and a set of secondelectrodes have performed steps 1114 and 1116, determining if the setsof the first electrodes and the second electrode have sent the drivingsignal. It yes, step 1120 is performed, otherwise returning to step 1112for next set of first electrodes and next set of second electrodes.

In step 1120: calculating at least one position of the at least oneapproaching object on the touch screen according to the results of steps1114 and 1116, that is, the multiple first round first sensinginformation and the multiple first round second sensing informationgenerated from the multiple first round mutual capacitive detectingsteps. Next, step 1122 is performed.

In step 1122: reporting the at least one position to a host.

Referring to FIG. 11B, another flowchart of a touch sensitive processingmethod according to one embodiment of the present invention isillustrated. The flowchart shown in FIG. 11B is a varied flowchart ofFIG. 11A, and if numerals are the same, it means the steps are the sameas those shown in FIG. 11A, and they will not be described again. Theprocesses shown in FIG. 11B are for the touch screen with the firstelectrodes being not able to gather into N neighboring first electrodesand further being not adjacent to each other. After performing step1110, step 1130 is performed.

In step 1130: p-th round first special mutual capacitive detecting stepsused for detecting neighboring first electrode being not able to gatherinto group. It further includes steps 1132 and 1134.

In step 1132: having the driving circuit sending the driving signal toneighboring M₁ first electrodes, where M₁ is a positive integer smallerthan N, the neighboring M₁ first electrodes do not include the firstelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps. At the same time, step1134 is performed.

In step 1134: having the sensing circuit simultaneously detecting thedriving signal via the third electrodes for generating multiple firstround first special sensing information with respective to the set offirst round first special mutual capacitive detecting step, wherein eachof the first round first special sensing information is corresponding toan intersection of central line of the M₁ first electrodes and the thirdelectrode. The processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the thirdelectrode with respective to the M₁ first electrodes and the N firstelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit. If there still have the first electrodes being notable to gather into groups, step 1140 may be performed again at leastone time, otherwise step 1124 can be directly performed.

In step 1140: p-th round first special mutual capacitive detecting stepsused for detecting neighboring first electrodes being not grouped. Andfurther, the neighboring first electrodes are not adjacent to the firstelectrodes mentioned in step 1130. It further includes steps 1142 and1144.

In step 1142: having the driving circuit sending the driving signal toneighboring M₂ first electrodes, where M₂ is a positive integer smallerthan N and is not equal to M₁, the neighboring M₂ first electrodes donot include the first electrodes and the M₁ first electrodes having beensent the driving signal in the multiple sets of first round mutualcapacitive detecting steps. At the same time, step 1144 is performed.

In step 1144: having the sensing circuit simultaneously detecting thedriving signal via the third electrodes for generating multiple firstround first special sensing information with respective to the set offirst round first special mutual capacitive detecting step, wherein eachof the first round first special sensing information is corresponding toan intersection of central line of the M₂ first electrodes and the thirdelectrode. The processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the thirdelectrode with respective to the M₂ first electrodes and the N firstelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit. If there still has the first electrode having beennot sent the driving signal, step 1140 may be performed again, orotherwise step 1124 is performed.

In step 1124: calculating at least one first round position of the atleast one object approaching or touching the touch screen according tothe multiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps and the multiplefirst round first special sensing information generated from all of thefirst round first special mutual capacitive detecting steps, that is,calculating at least one first round position according to the sensinginformation getting from steps 1114, 1116, 1134, and 1144. Next, step1126 is performed.

In step 1126: reporting the at least one first round position to a host.

Referring to FIG. 11C, another flowchart of a touch sensitive processingmethod according to one embodiment of the present invention isillustrated. The flowchart shown in FIG. 11C is a varied flowchart ofFIG. 11B, and if numerals are the same, it means the steps are the sameas those shown in FIGS. 11A and 11B, and they will not be describedagain. The processes shown in FIG. 11C are for the touch screen with thesecond electrodes being not grouped into a N neighboring secondelectrodes and further being not adjacent to each other. Afterperforming step 1110, steps 1130 and 1135 are performed.

In step 1135: p-th round second special mutual capacitive detectingsteps used for detecting neighboring second electrodes being not able togather into group. It further includes steps 1136 and 1138.

In step 1136: having the driving circuit sending the driving signal toneighboring M₃ second electrodes, where M₃ is a positive integer smallerthan N, the neighboring M₃ second electrodes do not include the secondelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps. At the same time, step1138 is performed.

In step 1138: having the sensing circuit simultaneously detecting thedriving signal via the fourth electrodes for generating multiple firstround second special sensing information with respective to the set offirst round second special mutual capacitive detecting step, whereineach of the first round second special sensing information iscorresponding to an intersection of central line of the M₃ secondelectrodes and the fourth electrode. The processor directs to andadjusts one of or any combination of parameters to make detectingstrengths of the fourth electrode with respective to the M₃ secondelectrodes and the N second electrodes are equivalent, wherein theparameters includes: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit. If there still havethe second electrodes being not able to gather into groups, step 1145may be performed again at least one time, otherwise step 1125 can bedirectly performed.

In step 1145: p-th round second special mutual capacitive detectingsteps used for detecting neighboring second electrodes being not able togather into group. And further, the neighboring second electrodes arenot adjacent to the second electrodes mentioned in step 1135. It furtherincludes steps 1146 and 1148.

In step 1146: sending the driving signal to neighboring M₄ secondelectrodes, where M₄ is a positive integer smaller than N and is notequal to M₃, the neighboring M₄ second electrodes do not include thesecond electrodes and the M₃ second electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps. At the same time, step 1148 is performed.

In step 1148: having the sensing circuit simultaneously detecting thedriving signal via the fourth electrodes for generating multiple firstround second special sensing information with respective to the set offirst round second special mutual capacitive detecting step, whereineach of the first round second special sensing information iscorresponding to an intersection of central line of the M₄ secondelectrodes and the fourth electrode. The processor directs to andadjusts one of or any combination of parameters to make detectingstrengths of the fourth electrode with respective to the M₄ secondelectrodes and the N second electrodes are equivalent, wherein theparameters includes: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit. If there still hasthe second electrode having been not sent the driving signal, step 1145may be performed again, or otherwise step 1125 is performed.

In step 1125: calculating at least one first round position of the atleast one object approaching or touching the touch screen according tothe multiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps, the multiplefirst round first special sensing information generated from all of thefirst round first special mutual capacitive detecting steps, and themultiple first round second special sensing information generated fromall of the first round second special mutual capacitive detecting steps.Next, step 1126 is performed.

Referring to FIG. 11D, another flowchart of a touch sensitive processingmethod according to one embodiment of the present invention isillustrated. The flowchart shown in FIG. 11D is a varied flowchart ofFIGS. 11A-C, and if numerals are the same, it means the steps are thesame as those shown in FIGS. 11A-C, and they will not be describedagain. The processes shown in FIG. 11D is for calculating theapproaching object's precise approaching or touching position inmultiple round of detectings. Firstly, step 1102 is performed forinitialization.

In step 1102: setting a variable p to 1, where p is a positive integersmaller than or equal to N. Next, step 1110 is performed.

Step 1110 of FIG. 11D is almost the same as step 1110 of FIGS. 11A-C,except for p of p-th round being considered to a variable. Multiple p-thround sensing information can be generated. Next, optional step 1150 isperformed. When optional step 1150 is not performed, step 1160 isperformed.

In step 1150: it may include steps 1130 and 1140 shown in FIG. 11B, orsteps 1135 and 1145 shown in FIG. 11C. Multiple p-th round first specialsensing information and/or multiple p-th round second sensinginformation can be generated. Next, step 1160 is performed.

In step 1160: calculating at least one p-th round position of the atleast one object approaching or touching the touch screen according tothe multiple p-th round sensing information generated from the multipleset of p-th round mutual capacitive detecting steps, the optionalmultiple p-th round first special sensing information, and the optionalmultiple p-th round second special sensing information. Next, step 1170is performed.

In step 1170: adding 1 to variable p and determining if p is larger thanN. If yes, the processes exit loop and performs step 1127, otherwise theprocesses returns to loop and performs step 1110.

In step 1127: averaging N p-th round position to get an averageposition, where p is a positive integer from 1 to N. Next, step 1128 isperformed.

In step 1128: reporting the average position to a host.

To sum up, to use the mechanism provided by the present invention mayspeed up the reporting rate of approximating event to let user(s) keepthe same or even have better experience in using the touch screen in bigsize.

According to one embodiment of the present invention, it provides atouch sensitive processing apparatus configured to connect to a touchscreen and used to detect at least one object approximating or touchingthe touch screen. The touch screen includes multiple first electrodesbeing parallel to each other and multiple second electrodes beingparallel to each other. Each of the first electrodes intersects with thesecond electrodes to form multiple intersection areas. The touchsensitive processing apparatus includes: a driving circuit, connectingto the first electrodes, respectively; a sensing circuit, connecting tothe second electrodes, respectively; and a processor, configured toconnect to the driving circuit and the sensing circuit. The processor isused for executing multiple sets of first round mutual capacitivedetecting steps. Wherein each set of the first round mutual capacitivedetecting step further includes: having the driving circuit sending adriving signal to neighboring N first electrodes, where N is a positiveinteger larger than 1; and having the sensing circuit simultaneouslydetecting the driving signal via the second electrodes for generatingmultiple first round sensing information with respective to the set offirst round mutual capacitive detecting step. Each of the first roundsensing information is corresponding to an intersection of central lineof the N first electrodes and the second electrode.

In one embodiment, for calculating at least one position of at least oneobject, the processor is further used for: calculating at least oneposition of the at least one object on the touch screen according to themultiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps; and reporting theposition to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the processor is further used for:executing at least one first round special mutual capacitive detectingstep, including: having the driving circuit sending the driving signalto neighboring M₁ first electrodes, where M₁ is a positive integersmaller than N, the neighboring M₁ first electrodes do not include thefirst electrodes having been sent the driving signal in the multiplesets of first round mutual capacitive detecting steps; and having thesensing circuit simultaneously detecting the driving signal via thesecond electrodes for generating multiple first round special sensinginformation with respective to the set of first round special mutualcapacitive detecting step, wherein each of the first round specialsensing information is corresponding to an intersection of central lineof the M₁ first electrodes and the second electrode, wherein theprocessor directs to and adjusts one of or any combination of parametersto make detecting strengths of the second electrode with respective tothe M₁ first electrodes and the N first electrodes are equivalent,wherein the parameters includes: waveform, voltage, strength of thedriving signal, driving duration, timing of driving, detecting duration,timing of detecting, time difference between the sensing timing anddriving timing, resistance value of variable resistor of the sensingcircuit, and gain value of amplifier of the sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes ungrouped first electrodes are furthernot adjacent to each other, the processor is further used for: executinganother first round special mutual capacitive detecting step, including:having the driving circuit sending the driving signal to neighboring M₂first electrodes, where M₂ is a positive integer smaller than N and isnot equal to M₁, the neighboring M₂ first electrodes do not include thefirst electrodes and the M₁ first electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps; and having the sensing circuit simultaneously detectingthe driving signal via the second electrodes for generating multiplefirst round special sensing information with respective to the set offirst round special mutual capacitive detecting step, wherein each ofthe first round special sensing information is corresponding to anintersection of central line of the M₂ first electrodes and the secondelectrode, wherein the processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the secondelectrode with respective to the M₂ first electrodes and the N firstelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.

In one embodiment, for calculating at least one position of at least oneobject, the processor is further used for: calculating at least onefirst round position of the at least one object on the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps andthe multiple first round special sensing information generated from allof the first round special mutual capacitive detecting steps; andreporting the first round position to a host.

In one embodiment, for compensating inaccuracy resulting from one roundsensing information, multiple round detecting is performed to increasethe accuracy of the approximating position. The processor is furtherused for: executing iteratively the following steps for N−1 times:executing multiple X-th round mutual capacitive detecting steps, where Xis a positive integer from 2 to N, wherein each of the X-th round mutualcapacitive detecting steps includes: having the driving circuitsimultaneously sending the driving signal to neighboring N firstelectrodes, where N is a positive integer larger than 1; and having thesensing circuit simultaneously detecting the driving signal via thesecond electrodes for generating multiple X-th round sensing informationwith respective to the set of X-th round mutual capacitive detectingstep, wherein each of the X-th round sensing information iscorresponding to an intersection of central line of the N firstelectrodes and the second electrode; and executing one X-th roundspecial mutual capacitive detecting step, including: having the drivingcircuit sending the driving signal to neighboring M_(x) firstelectrodes, where M_(x) is a positive integer smaller than N, theneighboring M_(x) first electrodes do not include the first electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple X-th round special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round special sensing information iscorresponding to an intersection of central line of the M_(x) firstelectrodes and the second electrode, wherein the processor directs toand adjusts one of or any combination of parameters to make detectingstrengths of the second electrode with respective to the M_(x) firstelectrodes and the N first electrodes are equivalent, wherein theparameters includes: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating more precise approximating ortouching position of the object in multiple round detecting, theprocessor is further used for: executing iteratively the following stepsfor N times to get N p-th round position of the at least one object onthe touch screen: calculating at least one p-th round position of the atleast one object approaching or touching the touch screen according tothe multiple p-th round sensing information and the multiple p-th roundspecial sensing information; averaging N p-th round positions to get anaverage position; and reporting the average position to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes ungrouped first electrodes are furthernot adjacent to each other, the neighboring M_(p) first electrodes andthe neighboring M_(q) first electrodes include different firstelectrodes, where p and q are different positive integers ranging from 1to N.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the value of M_(p) is the same as thevalue of M_(q), where p and q are different positive integers rangingfrom 1 to N.

In one embodiment, for reducing EMI with other adjacent parts orelectronic apparatuses, the neighboring M_(p) first electrodes areselected in random, where p is a positive integer from 1 to N.

In one embodiment, for simplifying algorithm, the neighboring M₁ firstelectrodes are the M₁ first electrodes near one edge of the touchscreen, the neighboring M_(N) first electrodes are the M_(N) firstelectrodes near the other edge of the touch screen.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first electrodes areparallel to the pixel horizontal axis of the touch screen. In oneembodiment, for reducing the thickness of the touch screen, the touchscreen is an in-cell touch LCD screen, a common electrode of the touchscreen includes at least one first electrode.

In one embodiment, for speeding up the rate of reporting object, theprocessor is further used for: executing a whole-screen-drivingdetecting step before executing the multiple sets of first round mutualcapacitive detecting steps; and executing the multiple sets of firstround mutual capacitive detecting steps when the at least oneapproaching object is detected by the whole-screen-driving detectingstep. In the embodiment, the processor is further used for: executing asequential driving detecting step before executing the multiple sets offirst round mutual capacitive detecting steps; and executing themultiple sets of first round mutual capacitive detecting steps when thenumber of the approaching object detected by the sequential drivingdetecting step is bigger than a threshold. In the embodiment, thewhole-screen-driving detecting step further includes: having the drivingcircuit simultaneously sending the driving signal to all the firstelectrodes; having the sensing circuit simultaneously detecting thedriving signal via the second electrodes for generating one-dimensionalsensing information with respective to and formed by multiple sensinginformation; and determining if at least one approaching objectapproximates the touch screen according to the one-dimensional sensinginformation. In the embodiment, the sequential driving detecting stepfurther includes: having the driving circuit alternatively sending thedriving signal to all the first electrodes in time division; having thesensing circuit simultaneously detecting the driving signal via thesecond electrodes when each of the first electrodes sends the drivingsignal for generating two-dimensional sensing information withrespective to and formed by multiple sensing information; anddetermining a number of and a position of the approaching objectapproximating or touching the touch screen according to thetwo-dimensional sensing information.

The present invention does not limit the executing order of the p-thround special mutual capacitive detecting steps and the p-th roundmutual capacitive detecting steps, where p is a positive integer from 1to N. In one embodiment, the p-th round special mutual capacitivedetecting steps may be executed at first and then the p-th round mutualcapacitive detecting steps are executed. In another embodiment, the p-thround mutual capacitive detecting steps may first be executed and thenthe p-th round special mutual capacitive detecting steps are executed.In further one embodiment, a part of the p-th round mutual capacitivedetecting steps may first executed, next the p-th round special mutualcapacitive detecting steps are executed, and then the other parts of thep-th round mutual capacitive detecting steps are executed and finished.

The present invention does not limit the executing number of the p-thround special mutual capacitive detecting steps in the p-th round. Inone embodiment, assumed N=3, the value of M_(p) may be 1. In otherwords, the special mutual capacitive detecting steps may be executed twotimes in one round. Each time of the special mutual capacitive detectingsteps use single first electrode to send a driving signal. In anotherembodiment, assumed N=4, the value of M_(p) may be 1. In other words,the special mutual capacitive detecting steps may be executed threetimes in one round. Each time of the special mutual capacitive detectingsteps use single first electrode to send the driving signal.

Further, the present invention does not limit whether the numbers of thefirst electrodes used by multiple the p-th round special mutualcapacitive detecting steps in the p-th round are the same. In oneembodiment, assumed N=4, the p-th round special mutual capacitivedetecting steps may be executed one time and single first electrode isused to send the driving signal. Another p-th round special mutualcapacitive detecting steps may also be executed and two adjacent firstelectrodes are used to send the driving signal. In other words, in thesame round of the p-th round special mutual capacitive detecting steps,they may use different numbers of the first electrodes.

According to one embodiment of the present invention, it provides anelectronic system used to detect at least one approaching objectapproximating or touching a touch screen. The electronic system includesthe touch screen and a touch sensitive processing apparatus connectingto the touch screen. The features of the touch screen and the touchsensitive processing apparatus connecting to the touch screen aredescribed as above.

According to one embodiment of the present invention, it provides atouch sensitive processing method adaptive to a touch sensitiveprocessing apparatus configured to connect to a touch screen and used todetect at least one approaching object approximating or touching thetouch screen. Wherein the touch screen includes multiple firstelectrodes being parallel to each other and multiple second electrodesbeing parallel to each other. Each of the first electrodes intersectswith the second electrodes to form multiple intersection areas. Thetouch sensitive processing method includes: executing multiple sets offirst round mutual capacitive detecting steps, wherein each set of thefirst round mutual capacitive detecting step further includes: having adriving circuit sending a driving signal to neighboring N firstelectrodes, where N is a positive integer larger than 1; and having asensing circuit simultaneously detecting the driving signal via thesecond electrodes for generating multiple first round sensinginformation with respective to the set of first round mutual capacitivedetecting step. Wherein each of the first round sensing information iscorresponding to an intersection of central line of the N firstelectrodes and the second electrode.

In one embodiment, for calculating at least one approximating positionof at least one approaching object, the touch sensitive processingmethod further includes: calculating at least one position of the atleast one object approaching or touching the touch screen according tothe multiple first round sensing information generated from the multiplesets of first round mutual capacitive detecting steps; and reporting theposition to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the touch sensitive processing methodfurther includes: executing at least one first round special mutualcapacitive detecting step, including: having the driving circuit sendingthe driving signal to neighboring M₁ first electrodes, where M₁ is apositive integer smaller than N, the neighboring M₁ first electrodes donot include the first electrodes having been sent the driving signal inthe multiple sets of first round mutual capacitive detecting steps; andhaving the sensing circuit simultaneously detecting the driving signalvia the second electrodes for generating multiple first round specialsensing information with respective to the set of first round specialmutual capacitive detecting step, wherein each of the first roundspecial sensing information is corresponding to an intersection ofcentral line of the M₁ first electrodes and the second electrode,wherein the touch sensitive processing method directs to and adjusts oneof or any combination of parameters to make detecting strengths of thesecond electrode with respective to the M₁ first electrodes and the Nfirst electrodes are equivalent, wherein the parameters includes:waveform, voltage, strength of the driving signal, driving duration,timing of driving, detecting duration, timing of detecting, timedifference between the sensing timing and driving timing, resistancevalue of variable resistor of the sensing circuit, and gain value ofamplifier of the sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the touch sensitive processingmethod further includes: having the driving circuit sending the drivingsignal to neighboring M₂ first electrodes, where M₂ is a positiveinteger smaller than N and is not equal to M₁, the neighboring M₂ firstelectrodes do not include the first electrodes and the M₁ firstelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps; and having the sensingcircuit simultaneously detecting the driving signal via the secondelectrodes for generating multiple first round special sensinginformation with respective to the set of first round special mutualcapacitive detecting step, wherein each of the first round specialsensing information is corresponding to an intersection of central lineof the M₂ first electrodes and the second electrode, wherein the touchsensitive processing method directs to and adjusts one of or anycombination of parameters to make detecting strengths of the secondelectrode with respective to the M₂ first electrodes and the N firstelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.

In one embodiment, for calculating at least one approximating positionof at least one approaching object, the touch sensitive processingmethod further includes: calculating at least one first round positionof the at least one object approaching or touching the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps andthe multiple first round special sensing information generated from allof the first round special mutual capacitive detecting steps; andreporting the first round position to a host.

In one embodiment, for compensating inaccuracy resulting from one roundsensing information, multiple round detecting is performed to increasethe accuracy of the approximating position. The touch sensitiveprocessing method further includes: executing iteratively the followingsteps for N−1 times: executing multiple X-th round mutual capacitivedetecting steps, where X is a positive integer from 2 to N, wherein eachof the X-th round mutual capacitive detecting steps includes: having thedriving circuit simultaneously sending the driving signal to neighboringN first electrodes, where N is a positive integer larger than 1; andhaving the sensing circuit simultaneously detecting the driving signalvia the second electrodes for generating multiple X-th round sensinginformation with respective to the set of X-th round mutual capacitivedetecting step, wherein each of the X-th round sensing information iscorresponding to an intersection of central line of the N firstelectrodes and the second electrode; and executing one X-th roundspecial mutual capacitive detecting step, including: having the drivingcircuit sending the driving signal to neighboring M_(x) firstelectrodes, where M_(x) is a positive integer smaller than N, theneighboring M_(x) first electrodes do not include the first electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple X-th round special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round special sensing information iscorresponding to an intersection of central line of the M_(x) firstelectrodes and the second electrode, wherein the touch sensitiveprocessing method directs to and adjusts one of or any combination ofparameters to make detecting strengths of the second electrode withrespective to the M_(x) first electrodes and the N first electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating more precise approximating ortouching position of the approaching object in multiple round detecting,the touch sensitive processing method further includes: executingiteratively the following steps for N times to get N p-th round positionof the at least one approaching object on the touch screen: calculatingat least one p-th round position of the at least one object approachingor touching the touch screen according to the multiple p-th roundsensing information and the multiple p-th round special sensinginformation; averaging N p-th round positions to get an averageposition; and reporting the average position to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the neighboring M_(p) firstelectrodes and the neighboring M_(q) first electrodes include differentfirst electrodes, where p and q are different positive integers rangingfrom 1 to N.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the value of M_(p) is the same as thevalue of M_(q), where p and q are different positive integers rangingfrom 1 to N.

In one embodiment, for reducing EMI with other adjacent parts orelectronic apparatuses, the neighboring M_(p) first electrodes areselected in random, where p is a positive integer from 1 to N.

In one embodiment, for simplifying algorithm, the neighboring M₁ firstelectrodes are the M₁ first electrodes near one edge of the touchscreen, the neighboring M_(N) first electrodes are the M_(N) firstelectrodes near the other edge of the touch screen.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first electrodes areparallel to the pixel horizontal axis of the touch screen. In oneembodiment, for reducing the thickness of the touch screen, the touchscreen is an in-cell touch LCD screen, a common electrode of the touchscreen includes at least one first electrode.

In one embodiment, for speeding up the rate of reporting approachingobject, the touch sensitive processing method further includes:executing a whole-screen-driving detecting step before executing themultiple sets of first round mutual capacitive detecting steps; andexecuting the multiple sets of first round mutual capacitive detectingsteps when the at least one approaching object is detected by thewhole-screen-driving detecting step. In the embodiment, the touchsensitive processing method further includes: executing a sequentialdriving detecting step before executing the multiple sets of first roundmutual capacitive detecting steps; and executing the multiple sets offirst round mutual capacitive detecting steps when the number of theapproaching object detected by the sequential driving detecting step isbigger than a threshold. In the embodiment, the whole-screen-drivingdetecting step further includes: having the driving circuitsimultaneously sending the driving signal to all the first electrodes;having the sensing circuit simultaneously detecting the driving signalvia the second electrodes for generating one-dimensional sensinginformation with respective to and formed by multiple sensinginformation; and determining if at least one approaching objectapproximates the touch screen according to the one-dimensional sensinginformation. In the embodiment, the sequential driving detecting stepfurther includes: having the driving circuit alternatively sending thedriving signal to all the first electrodes in time division; having thesensing circuit simultaneously detecting the driving signal via thesecond electrodes when each of the first electrodes sends the drivingsignal for generating two-dimensional sensing information withrespective to and formed by multiple sensing information; anddetermining a number of and a position of the approaching objectapproximating or touching the touch screen according to thetwo-dimensional sensing information.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch panel, including: multiple first electrodesbeing parallel to a first axis; multiple second electrodes beingparallel to a second axis; and multiple third electrodes being parallelto the second axis, wherein each of the first electrodes is arranged tobe spanned on the touch panel and intersects with the second electrodesor the third electrodes to form a plurality of intersection areas.

In one embodiment, for simplifying algorithm and/or manufacturing cost,intervals between each two of the first electrodes are equivalent.

In one embodiment, for simplifying algorithm and/or manufacturing cost,a number of the second electrodes equals to a number of the thirdelectrodes. In the embodiment, an axial direction of each of the secondelectrodes is the same as that of one of the third electrodes.

In one embodiment, for adapting to different accuracy in differentareas, a number of the second electrodes does not equal to a number ofthe third electrodes. In the embodiment, an axial direction of each ofthe second electrodes is not the same as that of the third electrodes.

In one embodiment, for connecting to a touch sensitive processingapparatus, the second electrodes connect to a touch sensitive processingapparatus via a first side of the touch panel, the third electrodesconnect to the touch sensitive processing apparatus via a second side ofthe touch panel, wherein the first side is parallel to the second side.

In one embodiment, for forming a touch screen, the touch panel isdisposed on a screen. In the embodiment, for averaging EMI resultingfrom pixel refreshing to the sensing circuit or letting EMI of thedriving signal being evenly distributed over the pixel horizontal axis,the first axis is parallel to an axial direction of pixel-refreshing ofthe screen.

In one embodiment, for reducing the thickness of the touch screen, thetouch panel is a part of an in-cell touch LCD screen, the firstelectrodes are the common electrodes of the in-cell touch LCD screen.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides an electronic system, including: a touch panel; and atouch sensitive processing apparatus connecting to the touch panel. Thetouch panel includes: multiple first electrodes being parallel to afirst axis; multiple second electrodes being parallel to a second axis;and multiple third electrodes being parallel to the second axis, whereineach of the first electrodes is arranged to be spanned on the touchpanel and intersects with the second electrodes or the third electrodesto form multiple intersection areas. The second electrodes connect tothe touch sensitive processing apparatus via a first side of the touchpanel, the third electrodes connect to the touch sensitive processingapparatus via a second side of the touch panel, wherein the first sideis parallel to the second side.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch screen, including: multiple first electrodesbeing parallel to a first axis; multiple second electrodes beingparallel to a second axis; and multiple third electrodes being parallelto the second axis, wherein each of the first electrodes is arranged tobe spanned on the touch screen and intersects with the second electrodesor the third electrodes to form a plurality of intersection areas.

In one embodiment, for simplifying algorithm and/or manufacturing cost,intervals between each two of the first electrodes are equivalent.

In one embodiment, for simplifying algorithm and/or manufacturing cost,a number of the second electrodes equals to a number of the thirdelectrodes. In the embodiment, an axial direction of each of the secondelectrodes is the same as that of one of the third electrodes.

In one embodiment, for adapting to different accuracy in differentareas, a number of the second electrodes does not equal to a number ofthe third electrodes. In the embodiment, an axial direction of each ofthe second electrodes is not the same as that of the third electrodes.

In one embodiment, for connecting to a touch sensitive processingapparatus, the second electrodes connect to a touch sensitive processingapparatus via a first side of the touch screen, the third electrodesconnect to the touch sensitive processing apparatus via a second side ofthe touch screen, wherein the first side is parallel to the second side.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first axis is parallelto an axial direction of pixel-refreshing of the screen.

In one embodiment, for reducing the thickness of the touch screen, thetouch screen is a part of an in-cell touch LCD screen, the firstelectrodes are the common electrodes of the in-cell touch LCD screen.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides an electronic system, including: a touch screen; and atouch sensitive processing apparatus connecting to the touch screen. Thetouch screen includes: multiple first electrodes being parallel to afirst axis; multiple second electrodes being parallel to a second axis;and multiple third electrodes being parallel to the second axis, whereineach of the first electrodes is arranged to be spanned on the touchscreen and intersects with the second electrodes or the third electrodesto form multiple intersection areas. The second electrodes connect tothe touch sensitive processing apparatus via a first side of the touchscreen, the third electrodes connect to the touch sensitive processingapparatus via a second side of the touch screen, wherein the first sideis parallel to the second side.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one objectapproximating or touching the touch screen. Wherein the touch screenincludes multiple first electrodes being parallel to a first axis,multiple second electrodes being parallel to a second axis, and multiplethird electrodes being parallel to the second axis. Wherein each of thefirst electrodes is arranged to be spanned on the touch screen andintersects with the second electrodes or the third electrodes to formmultiple intersection areas. The touch sensitive processing apparatusincludes: a driving circuit, connecting to the first electrodes,respectively; a sensing circuit, connecting to the second electrodes andthe third electrodes, respectively; and a processor, configured toconnect to the driving circuit and the sensing circuit. The processor isconfigured for iteratively executing the following steps: having thedriving circuit simultaneously sending a driving signal to two or morefirst electrodes, wherein at least one of the two or more firstelectrodes intersects with the second electrodes to form the multipleintersection areas, the other of the two or more first electrodesintersects with the third electrodes to form the multiple intersectionareas; and having the sensing circuit simultaneously sensing the drivingsignal via the second electrodes to generate a one-dimensional sensinginformation, having the sensing circuit simultaneously sensing thedriving signal via the third electrodes to generate anotherone-dimensional sensing information.

In one embodiment, in response to the numbers of the first electrodesintersecting with the second electrodes different to that of the firstelectrodes intersecting with the third electrodes, that is, the numbersof the first electrode in the upper half and the lower half aredifferent, the processor is further used for: executing iteratively thefollowing steps when all of the first electrodes intersecting with thesecond electrodes to form multiple intersection areas have been sent thedriving signal: having the driving circuit sending the driving signal toone of the electrodes having been not sent the driving signal; andhaving the sensing circuit simultaneously sensing the driving signal viathe third electrodes to generate another one-dimensional sensinginformation.

In one embodiment, for calculating at least one approximating positionof at least one approaching object, the processor is further used for:piecing up all of the one-dimensional sensing information withrespective to the order of the first electrodes to a two-dimensionalsensing information when all of the first electrodes have been sent thedriving signal; and detecting at least one object approximating ortouching the touch screen according to the two-dimensional sensinginformation.

In one embodiment, for simplifying algorithm, the two or more firstelectrodes used for sending the driving signal in iteratively executingsteps are selected in order according to the positions on the touchscreen.

In one embodiment, for avoiding fixed frequency's EMI with otheradjacent parts or electronic apparatuses, the two or more firstelectrodes used for sending the driving signal in iteratively executingsteps are selected in random.

In one embodiment, for speeding up the reporting rate of approximatingevent, a whole screen driving detecting is first performed. Theprocessor is further used for: executing the following steps beforeexecuting the iterative steps: having the driving circuit sending thedriving signal to all of the first electrodes; having the sensingcircuit simultaneously sensing the driving signal via the secondelectrodes to generate a one-dimensional first half screen sensinginformation, having the sensing circuit simultaneously sensing thedriving signal via the third electrodes to generate a one-dimensionalsecond half screen sensing information; determining if at least oneobject approximating or touching at least one of the second electrodesaccording to the one-dimensional first half screen sensing information;determining if at least one object approximating or touching at leastone of the third electrodes according to the one-dimensional second halfscreen sensing information; and executing the iterative steps when theat least one object approximating or touching at least one of the secondelectrodes and at least one of the third electrodes is determined.

In one embodiment, for simplifying algorithm and/or manufacturing cost,intervals between each two of the first electrodes are equivalent.

In one embodiment, for simplifying algorithm and/or manufacturing cost,a number of the second electrodes equals to a number of the thirdelectrodes. In the embodiment, an axial direction of each of the secondelectrodes is the same as that of one of the third electrodes.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first axis is parallelto an axial direction of pixel-refreshing of the screen.

In one embodiment, for connecting to a touch sensitive processingapparatus, the second electrodes connect to a touch sensitive processingapparatus via a first side of the touch screen, the third electrodesconnect to the touch sensitive processing apparatus via a second side ofthe touch screen, wherein the first side is parallel to the second side.

In one embodiment, for reducing the thickness of the touch screen, thetouch screen is an in-cell touch LCD screen, the first electrodes arethe common electrodes of the in-cell touch LCD screen.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing method adaptive to atouch sensitive processing apparatus configured to connect to a touchscreen and used to detect at least one object approximating or touchingthe touch screen. Wherein the touch screen includes multiple firstelectrodes being parallel to a first axis, multiple second electrodesbeing parallel to a second axis, and multiple third electrodes beingparallel to the second axis. Wherein each of the first electrodes isarranged to be spanned on the touch screen and intersects with thesecond electrodes or the third electrodes to form multiple intersectionareas. The touch sensitive processing method includes: executingiteratively the following steps: having the driving circuitsimultaneously sending a driving signal to two or more first electrodes,wherein at least one of the two or more first electrodes intersects withthe second electrodes to form the multiple intersection areas, the otherof the two or more first electrodes intersects with the third electrodesto form the multiple intersection areas; and having a sensing circuitsimultaneously sensing the driving signal via the second electrodes togenerate a one-dimensional sensing information, having the sensingcircuit simultaneously sensing the driving signal via the thirdelectrodes to generate another one-dimensional sensing information.

In one embodiment, in response to the numbers of the first electrodesintersecting with the second electrodes different to that of the firstelectrodes intersecting with the third electrodes, that is, the numbersof the first electrode in the upper half and the lower half aredifferent, the touch sensitive processing method further includes:executing iteratively the following steps when all of the firstelectrodes intersecting with the second electrodes to form multipleintersection areas have been sent the driving signal: having the drivingcircuit sending the driving signal to one of the electrodes having beennot sent the driving signal; and having the sensing circuitsimultaneously sensing the driving signal via the third electrodes togenerate another one-dimensional sensing information.

In one embodiment, for calculating at least one position of at least oneobject, the touch sensitive processing method further includes: piecingup all of the one-dimensional sensing information with respective to theorder of the first electrodes to a two-dimensional sensing informationwhen all of the first electrodes have been sent the driving signal; anddetecting at least one object approximating or touching the touch screenaccording to the two-dimensional sensing information.

In one embodiment, for simplifying algorithm, the two or more firstelectrodes used for sending the driving signal in iteratively executingsteps are selected in order according to the positions on the touchscreen.

In one embodiment, for avoiding fixed frequency's EMI with otheradjacent parts or electronic apparatuses, the two or more firstelectrodes used for sending the driving signal in iteratively executingsteps are selected in random.

In one embodiment, for speeding up the reporting rate of approximatingevent, a whole screen driving detecting is first performed. The touchsensitive processing method further includes: executing the followingsteps before executing the iterative steps: having the driving circuitsending the driving signal to all of the first electrodes; having thesensing circuit simultaneously sensing the driving signal via the secondelectrodes to generate a one-dimensional first half screen sensinginformation, having the sensing circuit simultaneously sensing thedriving signal via the third electrodes to generate a one-dimensionalsecond half screen sensing information; determining if at least oneapproaching object approximates or touches at least one of the secondelectrodes according to the one-dimensional first half screen sensinginformation; determining if at least one object approximating ortouching at least one of the third electrodes according to theone-dimensional second half screen sensing information; and executingthe iterative steps when the at least one object approximating ortouching at least one of the second electrodes and at least one of thethird electrodes is determined.

In one embodiment, for simplifying algorithm and/or manufacturing cost,intervals between each two of the first electrodes are equivalent.

In one embodiment, for simplifying algorithm and/or manufacturing cost,a number of the second electrodes equals to a number of the thirdelectrodes. In the embodiment, an axial direction of each of the secondelectrodes is the same as that of one of the third electrodes.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first axis is parallelto an axial direction of pixel-refreshing of the screen.

In one embodiment, for connecting to a touch sensitive processingapparatus, the second electrodes connect to a touch sensitive processingapparatus via a first side of the touch screen, the third electrodesconnect to the touch sensitive processing apparatus via a second side ofthe touch screen, wherein the first side is parallel to the second side.

In one embodiment, for reducing the thickness of the touch screen, thetouch screen is an in-cell touch LCD screen, the first electrodes arethe common electrodes of the in-cell touch LCD screen.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides an electronic system. The electronic system includes atouch screen and a touch sensitive processing apparatus connecting tothe touch screen. The features of the touch screen and the touchsensitive processing apparatus connecting to the touch screen aredescribed as above.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one approachingobject approximating or touching the touch screen. Wherein the touchscreen includes multiple first electrodes being parallel to a firstaxis, multiple second electrodes being parallel to a second axis, andmultiple third electrodes being parallel to the second axis. Whereineach of the first electrodes is arranged to be spanned on the touchscreen and intersects with the second electrodes or the third electrodesto form multiple intersection areas. The touch sensitive processingapparatus includes: a driving circuit, connecting to the firstelectrodes, respectively; a sensing circuit, connecting to the secondelectrodes and the third electrodes, respectively; and a processor,configured to connect to the driving circuit and the sensing circuit.The processor is configured for iteratively executing the followingsteps: having the driving circuit sending the driving signal to all ofthe first electrodes; having the sensing circuit simultaneously sensingthe driving signal via the second electrodes to generate aone-dimensional first half screen sensing information, having thesensing circuit simultaneously sensing the driving signal via the thirdelectrodes to generate a one-dimensional second half screen sensinginformation; determining if any object approximating or touching atleast one of the second electrodes according to the one-dimensionalfirst half screen sensing information; determining if any objectapproximating or touching at least one of the third electrodes accordingto the one-dimensional second half screen sensing information; andreporting to a host there is no object when no object approximating ortouching at least one of the second electrodes and at least one of thethird electrodes is determined.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing method adaptive to atouch sensitive processing apparatus configured to connect to a touchscreen and used to detect at least one approaching object approximatingor touching the touch screen. Wherein the touch screen includes multiplefirst electrodes being parallel to a first axis, multiple secondelectrodes being parallel to a second axis, and multiple thirdelectrodes being parallel to the second axis. Wherein each of the firstelectrodes is arranged to be spanned on the touch screen and intersectswith the second electrodes or the third electrodes to form multipleintersection areas. The touch sensitive processing method includes:having a driving circuit sending a driving signal to all of the firstelectrodes; having a sensing circuit simultaneously sensing the drivingsignal via the second electrodes to generate a one-dimensional firsthalf screen sensing information, having the sensing circuitsimultaneously sensing the driving signal via the third electrodes togenerate a one-dimensional second half screen sensing information;determining if any object approximating or touching at least one of thesecond electrodes according to the one-dimensional first half screensensing information; determining if any object approximating or touchingat least one of the third electrodes according to the one-dimensionalsecond half screen sensing information; and reporting to a host there isno object when no object approximating or touching at least one of thesecond electrodes and at least one of the third electrodes isdetermined.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive electronic system. The touchsensitive electronic system includes a touch screen and a touchsensitive processing apparatus connecting to the touch screen. Thefeatures of the touch screen and the touch sensitive processingapparatus connecting to the touch screen are described as above.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing apparatus configured toconnect to a touch screen and used to detect at least one approachingobject approximating or touching the touch screen. Wherein the touchscreen includes multiple neighboring first electrodes and multipleneighboring second electrodes parallel to a first axis, multipleneighboring third electrodes and multiple neighboring fourth electrodesparallel to a second axis. Wherein each of the first electrodesintersects with the third electrodes to form multiple intersectionareas, each of the second electrodes intersects with the fourthelectrodes to form multiple intersection areas. The touch sensitiveprocessing apparatus includes: a driving circuit, connecting to thefirst electrodes and the second electrodes, respectively; a sensingcircuit, connecting to the third electrodes and the fourth electrodes,respectively; and a processor, configured to connect to the drivingcircuit and the sensing circuit. The processor is configured for:executing multiple sets of first round mutual capacitive detectingsteps, wherein each set of the first round mutual capacitive detectingstep further includes: having the driving circuit sending a drivingsignal to neighboring N first electrodes and neighboring N secondelectrodes, where N is a positive integer larger than 1; having thesensing circuit simultaneously detecting the driving signal via thethird electrodes for generating multiple first round first sensinginformation with respective to the set of first round mutual capacitivedetecting step, wherein each of the first round first sensinginformation is corresponding to an intersection of central line of the Nfirst electrodes and the third electrode; and having the sensing circuitsimultaneously detecting the driving signal via the fourth electrodesfor generating multiple first round second sensing information withrespective to the set of first round mutual capacitive detecting step,wherein each of the first round second sensing information iscorresponding to an intersection of central line of the N secondelectrodes and the fourth electrode.

In one embodiment, for calculating at least one position of at least oneobject, the processor is further used for: calculating at least oneposition of the at least one approaching object on the touch screenaccording to the multiple first round first sensing information and themultiple first round second sensing information generated from themultiple first round mutual capacitive detecting steps; and reportingthe at least one position to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the processor is further used for:executing at least one first round first special mutual capacitivedetecting step, including: having the driving circuit sending thedriving signal to neighboring M₁ first electrodes, where M₁ is apositive integer smaller than N, the neighboring M₁ first electrodes donot include the first electrodes having been sent the driving signal inthe multiple sets of first round mutual capacitive detecting steps; andhaving the sensing circuit simultaneously detecting the driving signalvia the third electrodes for generating multiple first round firstspecial sensing information with respective to the set of first roundfirst special mutual capacitive detecting step, wherein each of thefirst round first special sensing information is corresponding to anintersection of central line of the M₁ first electrodes and the thirdelectrode, wherein the processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the thirdelectrode with respective to the M₁ first electrodes and the N firstelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the processor is further used for:executing another first round first special mutual capacitive detectingstep, including: having the driving circuit sending the driving signalto neighboring M₂ first electrodes, where M₂ is a positive integersmaller than N and is not equal to M₁, the neighboring M₂ firstelectrodes do not include the first electrodes and the M₁ firstelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps; and having the sensingcircuit simultaneously detecting the driving signal via the thirdelectrodes for generating multiple first round first special sensinginformation with respective to the set of first round first specialmutual capacitive detecting step, wherein each of the first round firstspecial sensing information is corresponding to an intersection ofcentral line of the M₂ first electrodes and the third electrode, whereinthe processor directs to and adjusts one of or any combination ofparameters to make detecting strengths of the third electrode withrespective to the M₂ first electrodes and the N first electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating at least one position of at least oneobject, the processor is further used for: calculating at least onefirst round position of the at least one object on the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps andthe multiple first round first special sensing information generatedfrom all of the first round first special mutual capacitive detectingsteps; and reporting the at least one first round position to a host.

In one embodiment, in response to the touch panel being not grouped intoneighboring second electrodes, the processor is further used for:executing at least one first round second special mutual capacitivedetecting step, including: having the driving circuit sending thedriving signal to neighboring M₃ second electrodes, where M₃ is apositive integer smaller than N, the neighboring M₃ second electrodes donot include the second electrodes having been sent the driving signal inthe multiple sets of first round mutual capacitive detecting steps; andhaving the sensing circuit simultaneously detecting the driving signalvia the fourth electrodes for generating multiple first round secondspecial sensing information with respective to the set of first roundsecond special mutual capacitive detecting step, wherein each of thefirst round second special sensing information is corresponding to anintersection of central line of the M₃ second electrodes and the fourthelectrode, wherein the processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the fourthelectrode with respective to the M₃ second electrodes and the N secondelectrodes are equivalent, wherein the parameters includes: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring second electrodes and ungrouped second electrodes arefurther not adjacent to each other, the processor is further used for:executing another first round second special mutual capacitive detectingstep, including: having the driving circuit sending the driving signalto neighboring M₄ second electrodes, where M₄ is a positive integersmaller than N and is not equal to M₃, the neighboring M₄ secondelectrodes do not include the second electrodes and the M₃ secondelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps; and having the sensingcircuit simultaneously detecting the driving signal via the fourthelectrodes for generating multiple first round second special sensinginformation with respective to the set of first round second specialmutual capacitive detecting step, wherein each of the first round secondspecial sensing information is corresponding to an intersection ofcentral line of the M₄ second electrodes and the fourth electrode,wherein the processor directs to and adjusts one of or any combinationof parameters to make detecting strengths of the fourth electrode withrespective to the M₄ second electrodes and the N second electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating at least one position of at least oneobject, the processor is further used for: calculating at least onefirst round position of the at least one object on the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps, themultiple first round first special sensing information generated fromall of the first round first special mutual capacitive detecting steps,and the multiple first round second special sensing informationgenerated from all of the first round second special mutual capacitivedetecting steps; and reporting the first round position to a host.

In one embodiment, for compensating inaccuracy resulting from one roundsensing information, multiple round detecting is performed to increasethe accuracy of the approximating position. The processor is furtherused for: executing iteratively the following steps for N−1 times:executing multiple X-th round mutual capacitive detecting steps, where Xis a positive integer from 2 to N, wherein each of the X-th round mutualcapacitive detecting steps includes: having the driving circuitsimultaneously sending the driving signal to neighboring N firstelectrodes and neighboring N second electrodes, where N is a positiveinteger larger than 1; and having the sensing circuit simultaneouslydetecting the driving signal via the third electrodes for generatingmultiple X-th round first sensing information with respective to the setof X-th round mutual capacitive detecting step, having the sensingcircuit simultaneously detecting the driving signal via the fourthelectrodes for generating multiple X-th round second sensing informationwith respective to the set of X-th round mutual capacitive detectingstep, wherein each of the X-th round second sensing information iscorresponding to an intersection of central line of the N secondelectrodes and the fourth electrode; and executing one X-th roundspecial mutual capacitive detecting step, including: having the drivingcircuit sending the driving signal to neighboring M_(x) first electrodesand neighboring M_(y) second electrodes, where M_(x), M_(y) are positiveintegers smaller than N, the neighboring M_(x) first electrodes do notinclude the first electrodes having been sent the driving signal in themultiple sets of X-th round mutual capacitive detecting steps, theneighboring M_(y) second electrodes do not include the second electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the third electrodes forgenerating multiple X-th round first special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round first special sensing informationis corresponding to an intersection of central line of the M_(x) firstelectrodes and the third electrode, having the sensing circuitsimultaneously detecting the driving signal via the fourth electrodesfor generating multiple X-th round second special sensing informationwith respective to the set of X-th round special mutual capacitivedetecting step, wherein each of the X-th round second special sensinginformation is corresponding to an intersection of central line of theM_(y) second electrodes and the fourth electrode, wherein the processordirects to and adjusts one of or any combination of parameters to makedetecting strengths of the third electrode with respective to the M_(x)first electrodes and the N first electrodes are equivalent, and to makedetecting strengths of the fourth electrode with respective to the M_(y)second electrodes and the N second electrodes are equivalent, whereinthe parameters includes: waveform, voltage, strength of the drivingsignal, driving duration, timing of driving, detecting duration, timingof detecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating more precise approximating ortouching position of the object in multiple round detecting, theprocessor is further used for: executing iteratively the following stepsfor N times to get N p-th round position of the at least one approachingobject on the touch screen: calculating at least one p-th round positionof the at least one approaching object on the touch screen according tothe multiple p-th round sensing information generated from the multipleset of p-th round mutual capacitive detecting steps, the multiple p-thround first special sensing information, and the multiple p-th roundsecond special sensing information; averaging N p-th round position toget an average position, where p is a positive integer from 1 to N; andreporting the average position to a host.

In one embodiment, in response to the touch screen being not groupedinto N neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the neighboring M_(p) firstelectrodes and the neighboring M_(q) first electrodes include differentfirst electrodes, where p and q are different positive integers rangingfrom 1 to N.

In one embodiment, in response to the touch screen being not groupedinto N neighboring first electrodes, the value of M_(p) is the same asthe value of M_(q), where p and q are different positive integersranging from 1 to N.

In one embodiment, for reducing EMI with other adjacent parts orelectronic apparatuses, the neighboring M_(p) first electrodes areselected in random, where p is a positive integer from 1 to N.

In one embodiment, for simplifying algorithm, the neighboring M₁ firstelectrodes are the M₁ first electrodes near one edge of the touchscreen, the neighboring M_(N) first electrodes are the M_(N) firstelectrodes near the other edge of the touch screen.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first electrodes and thesecond electrodes are parallel to the pixel horizontal axis of the touchscreen. In one embodiment, for reducing the thickness of the touchscreen, the touch screen is an in-cell touch LCD screen, a commonelectrode of the touch screen includes at least one first electrode andat least one second electrode.

In one embodiment, for speeding up the reporting rate of approximatingor touching event to let user keep the same or even have betterexperience in using the touch screen in big size, the processor isfurther used for: having the driving circuit sending the driving signalto all of the first electrodes and the second electrodes beforeexecuting the multiple first round mutual capacitive detecting steps;having the sensing circuit simultaneously sensing the driving signal viathe third electrodes to generate a one-dimensional first half screensensing information, having the sensing circuit simultaneously sensingthe driving signal via the fourth electrodes to generate aone-dimensional second half screen sensing information; determining ifat least one object approximating or touching at least one of the thirdelectrodes according to the one-dimensional first half screen sensinginformation; determining if at least one object approximating ortouching at least one of the fourth electrodes according to theone-dimensional second half screen sensing information; and executingthe multiple first round mutual capacitive detecting steps when the atleast one object approximating or touching at least one of the thirdelectrodes and at least one of the fourth electrodes is determined.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides a touch sensitive processing method adaptive to atouch sensitive processing apparatus configured to connect to a touchscreen and used to detect at least one object approximating or touchingthe touch screen. Wherein the touch screen includes multiple neighboringfirst electrodes and multiple neighboring second electrodes parallel toa first axis, multiple neighboring third electrodes and multipleneighboring fourth electrodes parallel to a second axis. Each of thefirst electrodes intersects with the third electrodes to form themultiple intersection areas, each of the second electrodes intersectswith the fourth electrodes to the form multiple intersection areas. Thetouch sensitive processing method includes: executing multiple sets offirst round mutual capacitive detecting steps, wherein each set of thefirst round mutual capacitive detecting step further includes: having adriving circuit sending a driving signal to neighboring N firstelectrodes and neighboring N second electrodes, where N is a positiveinteger larger than 1; having a sensing circuit simultaneously detectingthe driving signal via the third electrodes for generating multiplefirst round first sensing information with respective to the set offirst round mutual capacitive detecting step, wherein each of the firstround first sensing information is corresponding to an intersection ofcentral line of the N first electrodes and the third electrode; andhaving the sensing circuit simultaneously detecting the driving signalvia the fourth electrodes for generating multiple first round secondsensing information with respective to the set of first round mutualcapacitive detecting step, wherein each of the first round secondsensing information is corresponding to an intersection of central lineof the N second electrodes and the fourth electrode.

In one embodiment, for calculating at least one position of at least oneobject, the touch sensitive processing method further includes:calculating at least one position of the at least one object on thetouch screen according to the multiple first round first sensinginformation and the multiple first round second sensing informationgenerated from the multiple first round mutual capacitive detectingsteps; and reporting the at least one position to a host.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes, the touch sensitive processing methodfurther includes: executing at least one first round first specialmutual capacitive detecting step, including: having the driving circuitsending the driving signal to neighboring M₁ first electrodes, where M₁is a positive integer smaller than N, the neighboring M₁ firstelectrodes do not include the first electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps; and having the sensing circuit simultaneously detectingthe driving signal via the third electrodes for generating multiplefirst round first special sensing information with respective to the setof first round first special mutual capacitive detecting step, whereineach of the first round first special sensing information iscorresponding to an intersection of central line of the M₁ firstelectrodes and the third electrode, wherein the touch sensitiveprocessing method directs to and adjusts one of or any combination ofparameters to make detecting strengths of the third electrode withrespective to the M₁ first electrodes and the N first electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the touch sensitive processingmethod further includes: executing another first round first specialmutual capacitive detecting step, including: having the driving circuitsending the driving signal to neighboring M₂ first electrodes, where M₂is a positive integer smaller than N and is not equal to M₁, theneighboring M₂ first electrodes do not include the first electrodes andthe M₁ first electrodes having been sent the driving signal in themultiple sets of first round mutual capacitive detecting steps; andhaving the sensing circuit simultaneously detecting the driving signalvia the third electrodes for generating multiple first round firstspecial sensing information with respective to the set of first roundfirst special mutual capacitive detecting step, wherein each of thefirst round first special sensing information is corresponding to anintersection of central line of the M₂ first electrodes and the thirdelectrode, wherein the touch sensitive processing method directs to andadjusts one of or any combination of parameters to make detectingstrengths of the third electrode with respective to the M₂ firstelectrodes and the N first electrodes are equivalent, wherein theparameters includes: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating at least one position of at least oneobject, the touch sensitive processing method further includes:calculating at least one first round position of the at least oneapproaching object on the touch screen according to the multiple firstround sensing information generated from the multiple sets of firstround mutual capacitive detecting steps and the multiple first roundfirst special sensing information generated from all of the first roundfirst special mutual capacitive detecting steps; and reporting the atleast one first round position to a host.

In one embodiment, in response to the touch panel being not grouped intoneighboring second electrodes, the touch sensitive processing methodfurther includes: executing at least one first round second specialmutual capacitive detecting step, including: having the driving circuitsending the driving signal to neighboring M₃ second electrodes, where M₃is a positive integer smaller than N, the neighboring M₃ secondelectrodes do not include the second electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps; and having the sensing circuit simultaneously detectingthe driving signal via the fourth electrodes for generating multiplefirst round second special sensing information with respective to theset of first round second special mutual capacitive detecting step,wherein each of the first round second special sensing information iscorresponding to an intersection of central line of the M₃ secondelectrodes and the fourth electrode, wherein the touch sensitiveprocessing method directs to and adjusts one of or any combination ofparameters to make detecting strengths of the fourth electrode withrespective to the M₃ second electrodes and the N second electrodes areequivalent, wherein the parameters includes: waveform, voltage, strengthof the driving signal, driving duration, timing of driving, detectingduration, timing of detecting, time difference between the sensingtiming and driving timing, resistance value of variable resistor of thesensing circuit, and gain value of amplifier of the sensing circuit.

In one embodiment, in response to the touch panel being not grouped intoN neighboring second electrodes and ungrouped second electrodes arefurther not adjacent to each other, the touch sensitive processingmethod further includes: executing another first round second specialmutual capacitive detecting step, including: having the driving circuitsending the driving signal to neighboring M₄ second electrodes, where M₄is a positive integer smaller than N and is not equal to M₃, theneighboring M₄ second electrodes do not include the second electrodesand the M₃ second electrodes having been sent the driving signal in themultiple sets of first round mutual capacitive detecting steps; andhaving the sensing circuit simultaneously detecting the driving signalvia the fourth electrodes for generating multiple first round secondspecial sensing information with respective to the set of first roundsecond special mutual capacitive detecting step, wherein each of thefirst round second special sensing information is corresponding to anintersection of central line of the M₄ second electrodes and the fourthelectrode, wherein the touch sensitive processing method directs to andadjusts one of or any combination of parameters to make detectingstrengths of the fourth electrode with respective to the M₄ secondelectrodes and the N second electrodes are equivalent, wherein theparameters includes: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit.

In one embodiment, for calculating at least one position of at least oneobject, the touch sensitive processing method further includes:calculating at least one first round position of the at least one objecton the touch screen according to the multiple first round sensinginformation generated from the multiple sets of first round mutualcapacitive detecting steps, the multiple first round first specialsensing information generated from all of the first round first specialmutual capacitive detecting steps, and the multiple first round secondspecial sensing information generated from all of the first round secondspecial mutual capacitive detecting steps; and reporting the first roundposition to a host.

In one embodiment, for compensating inaccuracy resulting from one roundsensing information, multiple round detecting is performed to increasethe accuracy of the approximating position. The touch sensitiveprocessing method further includes: executing iteratively the followingsteps for N−1 times: executing multiple X-th round mutual capacitivedetecting steps, where X is a positive integer from 2 to N, wherein eachof the X-th round mutual capacitive detecting steps includes: having thedriving circuit simultaneously sending the driving signal to neighboringN first electrodes and neighboring N second electrodes, where N is apositive integer larger than 1; and having the sensing circuitsimultaneously detecting the driving signal via the third electrodes forgenerating multiple X-th round first sensing information with respectiveto the set of X-th round mutual capacitive detecting step, having thesensing circuit simultaneously detecting the driving signal via thefourth electrodes for generating multiple X-th round second sensinginformation with respective to the set of X-th round mutual capacitivedetecting step, wherein each of the X-th round second sensinginformation is corresponding to an intersection of central line of the Nsecond electrodes and the fourth electrode; and executing one X-th roundspecial mutual capacitive detecting step, including: having the drivingcircuit sending the driving signal to neighboring M_(x) first electrodesand neighboring M_(y) second electrodes, where M_(x), M_(y) are positiveintegers smaller than N, the neighboring M_(x) first electrodes do notinclude the first electrodes having been sent the driving signal in themultiple sets of X-th round mutual capacitive detecting steps, theneighboring M_(y) second electrodes do not include the second electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the third electrodes forgenerating multiple X-th round first special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round first special sensing informationis corresponding to an intersection of central line of the M_(x) firstelectrodes and the third electrode, having the sensing circuitsimultaneously detecting the driving signal via the fourth electrodesfor generating multiple X-th round second special sensing informationwith respective to the set of X-th round special mutual capacitivedetecting step, wherein each of the X-th round second special sensinginformation is corresponding to an intersection of central line of theM_(y) second electrodes and the fourth electrode, wherein the touchsensitive processing method directs to and adjusts one of or anycombination of parameters to make detecting strengths of the thirdelectrode with respective to the M_(x) first electrodes and the N firstelectrodes are equivalent, and to make detecting strengths of the fourthelectrode with respective to the M_(y) second electrodes and the Nsecond electrodes are equivalent, wherein the parameters includes:waveform, voltage, strength of the driving signal, driving duration,timing of driving, detecting duration, timing of detecting, timedifference between the sensing timing and driving timing, resistancevalue of variable resistor of the sensing circuit, and gain value ofamplifier of the sensing circuit.

In one embodiment, for calculating more precise position of the objectin multiple round detecting, the touch sensitive processing methodfurther includes: executing iteratively the following steps for N timesto get N p-th round position of the at least one approaching object onthe touch screen: calculating at least one p-th round position of the atleast one object on the touch screen according to the multiple p-thround sensing information generated from the multiple set of p-th roundmutual capacitive detecting steps, the multiple p-th round first specialsensing information, and the multiple p-th round second special sensinginformation; averaging N p-th round position to get an average position,where p is a positive integer from 1 to N; and reporting the averageposition to a host.

In one embodiment, in response to the touch screen being not groupedinto N neighboring first electrodes and ungrouped first electrodes arefurther not adjacent to each other, the neighboring M_(p) firstelectrodes and the neighboring M_(q) first electrodes include differentfirst electrodes, where p and q are different positive integers rangingfrom 1 to N.

In one embodiment, in response to the touch screen being not groupedinto N neighboring first electrodes, the value of M_(p) is the same asthe value of M_(q), where p and q are different positive integersranging from 1 to N.

In one embodiment, for reducing EMI with other adjacent parts orelectronic apparatuses, the neighboring M_(p) first electrodes areselected in random, where p is a positive integer from 1 to N.

In one embodiment, for simplifying algorithm, the neighboring M₁ firstelectrodes are the M₁ first electrodes near one edge of the touchscreen, the neighboring M_(N) first electrodes are the M_(N) firstelectrodes near the other edge of the touch screen.

In one embodiment, for averaging EMI resulting from pixel refreshing tothe sensing circuit or letting EMI of the driving signal being evenlydistributed over the pixel horizontal axis, the first electrodes and thesecond electrodes are parallel to the pixel horizontal axis of the touchscreen. In one embodiment, for reducing the thickness of the touchscreen, the touch screen is an in-cell touch LCD screen, a commonelectrode of the touch screen includes at least one first electrode andat least one second electrode.

In one embodiment, for speeding up the reporting rate of approximatingor touching event to let user keep the same or even have betterexperience in using the touch screen in big size, the touch sensitiveprocessing method further includes: having the driving circuit sendingthe driving signal to all of the first electrodes and the secondelectrodes before executing the multiple sets of first round mutualcapacitive detecting steps: having the sensing circuit simultaneouslysensing the driving signal via the third electrodes to generate aone-dimensional first half screen sensing information, having thesensing circuit simultaneously sensing the driving signal via the fourthelectrodes to generate a one-dimensional second half screen sensinginformation; determining if at least one object approximating ortouching at least one of the third electrodes according to theone-dimensional first half screen sensing information; determining if atleast one object approximating or touching at least one of the fourthelectrodes according to the one-dimensional second half screen sensinginformation; and executing the multiple first round mutual capacitivedetecting steps when the at least one object approximating or touchingat least one of the third electrodes and at least one of the fourthelectrodes is determined.

According to one embodiment of the present invention, for speeding upthe reporting rate of approximating or touching event to let user keepthe same or even have better experience in using the touch screen in bigsize, it provides an electronic system. The electronic system includes atouch screen and a touch sensitive processing apparatus connecting tothe touch screen. The features of the touch screen and the touchsensitive processing apparatus connecting to the touch screen aredescribed as above.

The above embodiments are only used to illustrate the principles of thepresent invention, and they should not be construed as to limit thepresent invention in any way. The above embodiments can be modified bythose with ordinary skill in the art without departing from the scope ofthe present invention as defined in the following appended claims.

What is claimed is:
 1. A touch sensitive processing apparatus configuredto connect to a touch screen and used to detect at least one objectapproximating or touching the touch screen, wherein the touch screencomprises a plurality of first electrodes being parallel to each otherand a plurality of second electrodes being parallel to each other, eachof the first electrodes intersects with the second electrodes to form aplurality of intersection areas, the touch sensitive processingapparatus comprising: a driving circuit, connecting to the firstelectrodes, respectively; a sensing circuit, connecting to the secondelectrodes, respectively; and a processor, configured to connect to thedriving circuit and the sensing circuit, the processor used for:executing multiple sets of first round mutual capacitive detectingsteps, wherein each set of the first round mutual capacitive detectingstep further comprises: having the driving circuit sending a drivingsignal to neighboring N first electrodes, where N is a positive integerlarger than 1; and having the sensing circuit simultaneously detectingthe driving signal via the second electrodes for generating multiplefirst round sensing information with respective to the set of firstround mutual capacitive detecting step, wherein each of the first roundsensing information is corresponding to an intersection of central lineof the N first electrodes and the second electrode.
 2. The touchsensitive processing apparatus of claim 1, wherein the processor isfurther used for: calculating at least one position of the at least oneobject on the touch screen according to the multiple first round sensinginformation generated from the multiple sets of first round mutualcapacitive detecting steps; and reporting the position to a host.
 3. Thetouch sensitive processing apparatus of claim 1, wherein the processoris further used for: executing at least one first round special mutualcapacitive detecting step, comprising: having the driving circuitsending the driving signal to neighboring M₁ first electrodes, where M₁is a positive integer smaller than N, the neighboring M₁ firstelectrodes do not include the first electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps; and having the sensing circuit simultaneously detectingthe driving signal via the second electrodes for generating multiplefirst round special sensing information with respective to the set offirst round special mutual capacitive detecting step, wherein each ofthe first round special sensing information is corresponding to anintersection of central line of the M₁ first electrodes and the secondelectrode, wherein the processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the secondelectrode with respective to the M₁ first electrodes and the N firstelectrodes are equivalent, wherein the parameters comprises: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.
 4. The touch sensitive processing apparatus ofclaim 3, wherein the processor is further used for: executing anotherfirst round special mutual capacitive detecting step, comprising: havingthe driving circuit sending the driving signal to neighboring M₂ firstelectrodes, where M₂ is a positive integer smaller than N and is notequal to M₁, the neighboring M₂ first electrodes do not include thefirst electrodes and the M₁ first electrodes having been sent thedriving signal in the multiple sets of first round mutual capacitivedetecting steps; and having the sensing circuit simultaneously detectingthe driving signal via the second electrodes for generating multiplefirst round special sensing information with respective to the set offirst round special mutual capacitive detecting step, wherein each ofthe first round special sensing information is corresponding to anintersection of central line of the M₂ first electrodes and the secondelectrode, wherein the processor directs to and adjusts one of or anycombination of parameters to make detecting strengths of the secondelectrode with respective to the M₂ first electrodes and the N firstelectrodes are equivalent, wherein the parameters comprises: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.
 5. The touch sensitive processing apparatus ofclaim 3, wherein the processor is further used for: calculating at leastone first round position of the at least one object on the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps andthe multiple first round special sensing information generated from allof the first round special mutual capacitive detecting steps; andreporting the first round position to a host.
 6. The touch sensitiveprocessing apparatus of claim 1, wherein the processor is further usedfor: executing iteratively the following steps for N−1 times: executingmultiple X-th round mutual capacitive detecting steps, where X is apositive integer from 2 to N, wherein each of the X-th round mutualcapacitive detecting steps comprises: having the driving circuitsimultaneously sending the driving signal to neighboring N firstelectrodes, where N is a positive integer larger than 1; and having thesensing circuit simultaneously detecting the driving signal via thesecond electrodes for generating multiple X-th round sensing informationwith respective to the set of X-th round mutual capacitive detectingstep, wherein each of the X-th round sensing information iscorresponding to an intersection of central line of the N firstelectrodes and the second electrode; and executing one X-th roundspecial mutual capacitive detecting step, comprising: having the drivingcircuit sending the driving signal to neighboring M_(x) firstelectrodes, where M_(x) is a positive integer smaller than N, theneighboring M_(x) first electrodes do not include the first electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple X-th round special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round special sensing information iscorresponding to an intersection of central line of the M_(x) firstelectrodes and the second electrode, wherein the processor directs toand adjusts one of or any combination of parameters to make detectingstrengths of the second electrode with respective to the M_(x) firstelectrodes and the N first electrodes are equivalent, wherein theparameters comprises: waveform, voltage, strength of the driving signal,driving duration, timing of driving, detecting duration, timing ofdetecting, time difference between the sensing timing and drivingtiming, resistance value of variable resistor of the sensing circuit,and gain value of amplifier of the sensing circuit.
 7. The touchsensitive processing apparatus of claim 6, wherein the processor isfurther used for: executing iteratively the following steps for N timesto get N p-th round position of the at least one object on the touchscreen: calculating at least one p-th round position of the at least oneobject on the touch screen according to the multiple p-th round sensinginformation and the multiple p-th round special sensing information;averaging N p-th round positions to get an average position; andreporting the average position to a host.
 8. The touch sensitiveprocessing apparatus of claim 4, wherein the neighboring M_(p) firstelectrodes and the neighboring M_(q) first electrodes comprise differentfirst electrodes, where p and q are different positive integers rangingfrom 1 to N.
 9. The touch sensitive processing apparatus of claim 4,wherein the value of M_(p) is the same as the value of M_(q), where pand q are different positive integers ranging from 1 to N.
 10. The touchsensitive processing apparatus of claim 3, wherein the neighboring M_(p)first electrodes are selected in random, where p is a positive integerfrom 1 to N.
 11. The touch sensitive processing apparatus of claim 6,wherein the neighboring M₁ first electrodes are the M₁ first electrodesnear one edge of the touch screen, the neighboring M_(N) firstelectrodes are the M_(N) first electrodes near the other edge of thetouch screen.
 12. The touch sensitive processing apparatus of claim 1,wherein the first electrodes are parallel to the pixel axis of the touchscreen.
 13. The touch sensitive processing apparatus of claim 1, whereinthe touch screen is an in-cell touch LCD screen, a common electrode ofthe touch screen comprises at least one first electrode.
 14. The touchsensitive processing apparatus of claim 1, wherein the processor isfurther used for: executing a whole-screen-driving detecting step beforeexecuting the multiple sets of first round mutual capacitive detectingsteps, wherein the whole-screen-driving detecting step furthercomprises: having the driving circuit simultaneously sending the drivingsignal to all the first electrodes; having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating one-dimensional sensing information with respective toand formed by multiple sensing information; and determining if at leastone object approximating or touching the touch screen according to theone-dimensional sensing information; and executing the multiple sets offirst round mutual capacitive detecting steps when the at least oneobject is detected by the whole-screen-driving detecting step.
 15. Thetouch sensitive processing apparatus of claim 1, wherein the processoris further used for: executing a sequential driving detecting stepbefore executing the multiple sets of first round mutual capacitivedetecting steps, wherein the sequential driving detecting step furthercomprises: having the driving circuit alternatively sending the drivingsignal to all the first electrodes in time division; having the sensingcircuit simultaneously detecting the driving signal via the secondelectrodes when each of the first electrodes sends the driving signalfor generating two-dimensional sensing information with respective toand formed by multiple sensing information; and determining a number ofand a position of the object approximating or touching the touch screenaccording to the two-dimensional sensing information; and executing themultiple sets of first round mutual capacitive detecting steps when thenumber of the object detected by the sequential driving detecting stepis bigger than a threshold.
 16. A touch sensitive processing methodadaptive to a touch sensitive processing apparatus configured to connectto a touch screen and used to detect at least one object approximatingor touching the touch screen, wherein the touch screen comprises aplurality of first electrodes being parallel to each other and aplurality of second electrodes being parallel to each other, each of thefirst electrodes intersects with the second electrodes to form aplurality of intersection areas, the touch sensitive processing methodcomprising: executing multiple sets of first round mutual capacitivedetecting steps, wherein each set of the first round mutual capacitivedetecting step further comprises: having a driving circuit sending adriving signal to neighboring N first electrodes, where N is a positiveinteger larger than 1; and having a sensing circuit simultaneouslydetecting the driving signal via the second electrodes for generatingmultiple first round sensing information with respective to the set offirst round mutual capacitive detecting step, wherein each of the firstround sensing information is corresponding to an intersection of centralline of the N first electrodes and the second electrode.
 17. The touchsensitive processing method of claim 16, further comprising: calculatingat least one position of the at least one object on the touch screenaccording to the multiple first round sensing information generated fromthe multiple sets of first round mutual capacitive detecting steps; andreporting the position to a host.
 18. The touch sensitive processingmethod of claim 16, further comprising: executing at least one firstround special mutual capacitive detecting step, comprising: having thedriving circuit sending the driving signal to neighboring M₁ firstelectrodes, where M₁ is a positive integer smaller than N, theneighboring M₁ first electrodes do not include the first electrodeshaving been sent the driving signal in the multiple sets of first roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple first round special sensing information withrespective to the set of first round special mutual capacitive detectingstep, wherein each of the first round special sensing information iscorresponding to an intersection of central line of the M₁ firstelectrodes and the second electrode, wherein the touch sensitiveprocessing method directs to and adjusts one of or any combination ofparameters to make detecting strengths of the second electrode withrespective to the M₁ first electrodes and the N first electrodes areequivalent, wherein the parameters comprises: waveform, voltage,strength of the driving signal, driving duration, timing of driving,detecting duration, timing of detecting, time difference between thesensing timing and driving timing, resistance value of variable resistorof the sensing circuit, and gain value of amplifier of the sensingcircuit.
 19. The touch sensitive processing method of claim 18, furthercomprising: executing another first round special mutual capacitivedetecting step, comprising: having the driving circuit sending thedriving signal to neighboring M₂ first electrodes, where M₂ is apositive integer smaller than N and is not equal to M₁, the neighboringM₂ first electrodes do not include the first electrodes and the M₁ firstelectrodes having been sent the driving signal in the multiple sets offirst round mutual capacitive detecting steps; and having the sensingcircuit simultaneously detecting the driving signal via the secondelectrodes for generating multiple first round special sensinginformation with respective to the set of first round special mutualcapacitive detecting step, wherein each of the first round specialsensing information is corresponding to an intersection of central lineof the M₂ first electrodes and the second electrode, wherein the touchsensitive processing method directs to and adjusts one of or anycombination of parameters to make detecting strengths of the secondelectrode with respective to the M₂ first electrodes and the N firstelectrodes are equivalent, wherein the parameters comprises: waveform,voltage, strength of the driving signal, driving duration, timing ofdriving, detecting duration, timing of detecting, time differencebetween the sensing timing and driving timing, resistance value ofvariable resistor of the sensing circuit, and gain value of amplifier ofthe sensing circuit.
 20. The touch sensitive processing method of claim18, further comprising: calculating at least one first round position ofthe at least one object on the touch screen according to the multiplefirst round sensing information generated from the multiple sets offirst round mutual capacitive detecting steps and the multiple firstround special sensing information generated from all of the first roundspecial mutual capacitive detecting steps; and reporting the first roundposition to a host.
 21. The touch sensitive processing method of claim16, further comprising: executing multiple X-th round mutual capacitivedetecting steps, where X is a positive integer from 2 to N, wherein eachof the X-th round mutual capacitive detecting steps comprises: havingthe driving circuit simultaneously sending the driving signal toneighboring N first electrodes, where N is a positive integer largerthan 1; and having the sensing circuit simultaneously detecting thedriving signal via the second electrodes for generating multiple X-thround sensing information with respective to the set of X-th roundmutual capacitive detecting step, wherein each of the X-th round sensinginformation is corresponding to an intersection of central line of the Nfirst electrodes and the second electrode; and executing one X-th roundspecial mutual capacitive detecting step, comprising: having the drivingcircuit sending the driving signal to neighboring M_(x) firstelectrodes, where M_(x) is a positive integer smaller than N, theneighboring M_(x) first electrodes do not include the first electrodeshaving been sent the driving signal in the multiple sets of X-th roundmutual capacitive detecting steps; and having the sensing circuitsimultaneously detecting the driving signal via the second electrodesfor generating multiple X-th round special sensing information withrespective to the set of X-th round special mutual capacitive detectingstep, wherein each of the X-th round special sensing information iscorresponding to an intersection of central line of the M_(x) firstelectrodes and the second electrode, wherein the touch sensitiveprocessing method directs to and adjusts one of or any combination ofparameters to make detecting strengths of the second electrode withrespective to the M_(x) first electrodes and the N first electrodes areequivalent, wherein the parameters comprises: waveform, voltage,strength of the driving signal, driving duration, timing of driving,detecting duration, timing of detecting, time difference between thesensing timing and driving timing, resistance value of variable resistorof the sensing circuit, and gain value of amplifier of the sensingcircuit.
 22. The touch sensitive processing method of claim 21, furthercomprising: executing iteratively the following steps for N times to getN p-th round position of the at least one object on the touch screen:calculating at least one p-th round position of the at least one objecton the touch screen according to the multiple p-th round sensinginformation and the multiple p-th round special sensing information;averaging N p-th round positions to get an average position; andreporting the average position to a host.
 23. The touch sensitiveprocessing method of claim 19, wherein the neighboring M_(p) firstelectrodes and the neighboring M_(q) first electrodes comprise differentfirst electrodes, where p and q are different positive integers rangingfrom 1 to N.
 24. The touch sensitive processing method of claim 19,wherein the value of M_(p) is the same as the value of M_(q), where pand q are different positive integers ranging from 1 to N.
 25. The touchsensitive processing method of claim 18, wherein the neighboring M_(p)first electrodes are selected in random, where p is a positive integerfrom 1 to N.
 26. The touch sensitive processing method of claim 21,wherein the neighboring M₁ first electrodes are the M₁ first electrodesnear one edge of the touch screen, the neighboring M_(N) firstelectrodes are the MN first electrodes near the other edge of the touchscreen.
 27. The touch sensitive processing method of claim 16, whereinthe first electrodes are parallel to the pixel axis of the touch screen.28. The touch sensitive processing method of claim 16, wherein the touchscreen is an in-cell touch LCD screen, a common electrode of the touchscreen comprises at least one first electrode.
 29. The touch sensitiveprocessing method of claim 16, further comprising: executing awhole-screen-driving detecting step before executing the multiple setsof first round mutual capacitive detecting steps, wherein thewhole-screen-driving detecting step further comprises: having thedriving circuit simultaneously sending the driving signal to all thefirst electrodes; having the sensing circuit simultaneously detectingthe driving signal via the second electrodes for generatingone-dimensional sensing information with respective to and formed bymultiple sensing information; and determining if at least one objectapproximating or touching the touch screen according to theone-dimensional sensing information; and executing the multiple sets offirst round mutual capacitive detecting steps when the at least oneobject is detected by the whole-screen-driving detecting step.
 30. Thetouch sensitive processing method of claim 16, further comprising:executing a sequential driving detecting step before executing themultiple sets of first round mutual capacitive detecting steps, whereinthe sequential driving detecting step further comprises: having thedriving circuit alternatively sending the driving signal to all thefirst electrodes in time division; having the sensing circuitsimultaneously detecting the driving signal via the second electrodeswhen each of the first electrodes sends the driving signal forgenerating two-dimensional sensing information with respective to andformed by multiple sensing information; and determining a number of anda position of the object approximating or touching the touch screenaccording to the two-dimensional sensing information; and executing themultiple sets of first round mutual capacitive detecting steps when thenumber of the object detected by the sequential driving detecting stepis bigger than a threshold.
 31. An electronic system used to detect atleast one object approximating or touching a touch screen, comprising:the touch screen, comprising a plurality of first electrodes beingparallel to each other and a plurality of second electrodes beingparallel to each other, each of the first electrodes intersects with thesecond electrodes to form a plurality of intersection areas; and a touchsensitive processing apparatus connecting to the touch screen, the touchsensitive processing apparatus comprising: a driving circuit, connectingto the first electrodes, respectively; a sensing circuit, connecting tothe second electrodes, respectively; and a processor, configured toconnect to the driving circuit and the sensing circuit, the processorused for: executing multiple sets of first round mutual capacitivedetecting steps, wherein each set of the first round mutual capacitivedetecting step further comprises: having the driving circuit sending adriving signal to neighboring N first electrodes, where N is a positiveinteger larger than 1; and having the sensing circuit simultaneouslydetecting the driving signal via the second electrodes for generatingmultiple first round sensing information with respective to the set offirst round mutual capacitive detecting step, wherein each of the firstround sensing information is corresponding to an intersection of centralline of the N first electrodes and the second electrode.